Mathematical Applications for the Management, Life, and Social Sciences
12th Edition
ISBN: 9781337625340
Author: Ronald J. Harshbarger, James J. Reynolds
Publisher: Cengage Learning
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Chapter 7.7, Problem 38E
To determine
To calculate: The second probability
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Sickle cell anemia is an inherited disease in which red blood cells become distorted and
deprived of oxygen. A person with two sickle cell genes will have the disease, but a
person with only one sickle cell gene will have a mild, nonfatal anemia called sickle
cell trait. If we use s to represent
a sickle cell gene, and S a healthy gene, the
table shows the four possibilities for the
children of one healthy, SS parent, and one
parent with sicke cell trait, Ss. Find the
probability that these parents give birth to a
child who has sickle cell anemia.
S
Healthy
First Parent S
Second Parent
(with Sickle
Cell Trait)
S
SS
SS
The probability that the parents give birth to a child who has sickle cell anemia =
(Type an integer or a simplified fraction.)
S
Ss
Ss
Some traits of plants and animals depend on inheritance of a single gene. This is called Mendelian inheritance, after Gregor Mendel (1822-1884). Each of us has an ABO blood type, which describes whether two characteristics called A and B are present. Every human being has two blood type alleles (gene forms), one inherited from our mother and one from our father. Each of these alleles can be A, B, or O. Which two we inherit determines our blood type. Here is a table that shows what our blood type is for each combination of two alleles.
Alleles inherited
Blood type
A and A
A
A and B
AB
A and O
A
B and B
B
B and O
B
O and O
O
We inherit each of a parent's two alleles with probability 0.5. We inherit independently from our mother and father.
What is the probability that both children have different blood types?
Scientist Gregor Mendel (1822-1884) is often called the "father of modern genetics" and is famous for his work involving
the inheritance of certain traits in pea plants. Suppose that the genes controlling the color of peas are Y for yellow and y
for green. Each plant has two genes, one from the female (seed) and one from the male (pollen). The Y gene is dominant,
and therefore a plant with genes YY will have yellow peas, a plant with genes Yy or yY will have yellow peas, and a plant
with genes yy will have green peas.
If a plant with two yellow genes (YY) is crossed with a plant with two green genes (yy), the result is four hybrid offspring
with genotypes Yy. The offspring will be yellow, but will carry the recessive green gene.
Parent 2
У
Yy Yy
Yy Yy
y
Parent 1
Suppose that both parent pea plants are hybrids with genotype Yy.
a. Make a chart showing the possible genotypes of the offspring.
b. What is the probability that a given offspring will have green peas?
c. What is the…
Chapter 7 Solutions
Mathematical Applications for the Management, Life, and Social Sciences
Ch. 7.1 - CHECKPOINT
1. If a coin is drawn from a box...Ch. 7.1 - CHECKPOINT
2. A ball will be drawn from a bag...Ch. 7.1 - CHECKPOINT
3. A coin is tossed, and a die is...Ch. 7.1 - 1. One ball is drawn at random from a bag...Ch. 7.1 - 2. One ball is drawn at random from a bag...Ch. 7.1 - 3. If you draw one card at random from a deck of...Ch. 7.1 - Prob. 4ECh. 7.1 - Prob. 5ECh. 7.1 - 6. A die is rolled. What is the probability...Ch. 7.1 - 7. An urn contains three red balls numbered 1, 2,...
Ch. 7.1 - 8. An urn contains three red balls numbered 1, 2,...Ch. 7.1 - 9. From a deck of 52 ordinary playing cards, one...Ch. 7.1 - 10. From a deck of 52 ordinary playing cards, one...Ch. 7.1 - 11. Suppose a fair coin is tossed two times....Ch. 7.1 - Prob. 12ECh. 7.1 - 13. Use Table 7.1 to determine the following...Ch. 7.1 - 14. (a) When a pair of distinguishable dice is...Ch. 7.1 - Prob. 15ECh. 7.1 - Prob. 16ECh. 7.1 - 17. Suppose a die is tossed 1200 times and a 6...Ch. 7.1 - 18. Suppose that a coin is tossed 3000 times and...Ch. 7.1 - Prob. 19ECh. 7.1 - Prob. 20ECh. 7.1 - 21. If the odds that a particular horse will win a...Ch. 7.1 - 22. If the odds that an event E will not occur are...Ch. 7.1 - Prob. 23ECh. 7.1 - Prob. 24ECh. 7.1 - 25. Car maintenance A car rental firm has 425...Ch. 7.1 - Prob. 26ECh. 7.1 - 27. Voting The table gives the average number of...Ch. 7.1 - Prob. 28ECh. 7.1 - 29. Sales promotion In a sales promotion, a...Ch. 7.1 - 30. Management A dry cleaning firm has 12...Ch. 7.1 - Prob. 31ECh. 7.1 - Prob. 32ECh. 7.1 - 33. Blood types Human blood is classified by blood...Ch. 7.1 - Prob. 34ECh. 7.1 - Prob. 35ECh. 7.1 - Prob. 36ECh. 7.1 - Prob. 37ECh. 7.1 - Prob. 38ECh. 7.1 - 39. Fraud A company selling substandard drugs to...Ch. 7.1 - Prob. 40ECh. 7.1 - Prob. 41ECh. 7.1 - Prob. 42ECh. 7.1 - Prob. 43ECh. 7.1 - 44. Quality control A supply of 500 plasma...Ch. 7.1 - Prob. 45ECh. 7.1 - Prob. 46ECh. 7.1 - Prob. 47ECh. 7.1 - 48. Quality control A computer store offers used...Ch. 7.1 - 49. Genetics A newly married couple plan to have...Ch. 7.1 - 50. Management A frustrated store manager is asked...Ch. 7.1 - Prob. 51ECh. 7.1 - Prob. 52ECh. 7.1 - Prob. 53ECh. 7.1 - Prob. 54ECh. 7.1 - Prob. 55ECh. 7.1 - Prob. 56ECh. 7.1 - Prob. 57ECh. 7.1 - Prob. 58ECh. 7.1 - Prob. 59ECh. 7.1 - Prob. 60ECh. 7.1 - Prob. 61ECh. 7.1 - Prob. 62ECh. 7.1 - Prob. 63ECh. 7.1 - 64. Ice cream The odds of an American home having...Ch. 7.1 - Prob. 65ECh. 7.1 - 66. Rain If the probability of rain today is ,...Ch. 7.1 - Prob. 68ECh. 7.2 - CHECKPOINT
1. If a ball is drawn from a bag...Ch. 7.2 - Prob. 2CPCh. 7.2 - Prob. 1ECh. 7.2 - Prob. 2ECh. 7.2 - In Problems 1-4, one card is drawn from a deck of...Ch. 7.2 - Prob. 4ECh. 7.2 - 5. An ordinary die is tossed. What is the...Ch. 7.2 - 6. A card is drawn at random from a deck of 52...Ch. 7.2 - 7. If the probability that event E will occur is...Ch. 7.2 - Prob. 8ECh. 7.2 - In Problems 9-12, one ball is drawn from a bag...Ch. 7.2 - In Problems 9-12, one ball is drawn from a bag...Ch. 7.2 - Prob. 11ECh. 7.2 - In Problems 9-12, one ball is drawn from a bag...Ch. 7.2 - 13. Suppose a die is biased (unfair) so that each...Ch. 7.2 - Prob. 14ECh. 7.2 - 15. A bag contains 4 white, 7 black, and 6 green...Ch. 7.2 - 16. In a game where only one player can win, the...Ch. 7.2 - 17. A cube has 2 faces painted red, 2 painted...Ch. 7.2 - Prob. 18ECh. 7.2 - 19. A ball is drawn from a bag containing 13 red...Ch. 7.2 - 20. A ball is drawn from a bag containing 13 red...Ch. 7.2 - 21. Drug use Forty-six percent of marijuana use...Ch. 7.2 - 22. Breast cancer According to the American Cancer...Ch. 7.2 - 23. Car maintenance A car rental firm has 425...Ch. 7.2 - 25. Linguistics Of 100 students, 24 can speak...Ch. 7.2 - 25. Linguistics Of 100 students, 24 can speak...Ch. 7.2 - 26. Management A company employs 65 people. Eight...Ch. 7.2 - Prob. 27ECh. 7.2 - 28. Mountain biking Rob Lee knows that he can...Ch. 7.2 - 29. Salaries The table gives the percent of...Ch. 7.2 - Prob. 30ECh. 7.2 - 31. Workers The table gives the projected number...Ch. 7.2 - 32. Causes of death In the United States in 2014,...Ch. 7.2 - 33. HIV cases The table gives the numbers of new...Ch. 7.2 - Prob. 34ECh. 7.2 - Prob. 35ECh. 7.2 - Prob. 36ECh. 7.2 - 37. Education A mathematics class consists of
16...Ch. 7.2 - 38. Parts delivery Repairing a copy machine...Ch. 7.2 - Oil drilling The table summarizes the opinions of...Ch. 7.2 - Prob. 40ECh. 7.2 - Prob. 41ECh. 7.2 - Prob. 42ECh. 7.2 - 43. Drinking age A survey questioned 1000 people...Ch. 7.2 - 44. Job bids Three construction companies have bid...Ch. 7.2 - Prob. 45ECh. 7.2 - Prob. 46ECh. 7.2 - Prob. 47ECh. 7.2 - Prob. 48ECh. 7.3 - CHECKPOINT
1. Suppose that one ball is drawn from...Ch. 7.3 - Prob. 2CPCh. 7.3 - CHECKPOINT
3. Two balls are drawn with replacement...Ch. 7.3 - 1. A card is drawn from a deck of 52 playing...Ch. 7.3 - Prob. 2ECh. 7.3 - 3. A die has been “loaded so that the probability...Ch. 7.3 - 4. A die has been “loaded” so that the probability...Ch. 7.3 - 5. A bag contains 9 red balls numbered 1, 2, 3, 4,...Ch. 7.3 - Prob. 6ECh. 7.3 - 7. A bag contains 4 red balls and 6 white balls....Ch. 7.3 - 8. A fair die is rolled. Find the probability that...Ch. 7.3 - 9. A fair coin is tossed 3 times. Find the...Ch. 7.3 - 10. A fair coin is tossed 14 times. What is the...Ch. 7.3 - 11. A die is thrown twice. What is the probability...Ch. 7.3 - Prob. 12ECh. 7.3 - Prob. 13ECh. 7.3 - Prob. 14ECh. 7.3 - 15. (a) A box contains 3 red balls, 2 white balls,...Ch. 7.3 - Prob. 16ECh. 7.3 - 17. Two balls are drawn from a bag containing 3...Ch. 7.3 - Prob. 18ECh. 7.3 - 19. A bag contains 9 nickels, 4 dimes, and 5...Ch. 7.3 - Prob. 20ECh. 7.3 - 21. A red ball and 4 white balls are in a box. If...Ch. 7.3 - 22. From a deck of 52 playing cards, two cards are...Ch. 7.3 - 23. One card is drawn at random from a deck of 52...Ch. 7.3 - Prob. 24ECh. 7.3 - 25. Two balls are drawn without replacement from a...Ch. 7.3 - Prob. 26ECh. 7.3 - Prob. 27ECh. 7.3 - Prob. 28ECh. 7.3 - Carbon emissions The table gives the results of a...Ch. 7.3 - Prob. 30ECh. 7.3 - Oil drilling Suppose the table summarizes the...Ch. 7.3 - Oil drilling Suppose the table summarizes the...Ch. 7.3 - Oil drilling Suppose the table summarizes the...Ch. 7.3 - Oil drilling Suppose the table summarizes the...Ch. 7.3 - Oil drilling Suppose the table summarizes the...Ch. 7.3 - Oil drilling Suppose the table summarizes the...Ch. 7.3 - Oil drilling Suppose the table summarizes the...Ch. 7.3 - Oil drilling Suppose the table summarizes the...Ch. 7.3 - Prob. 39ECh. 7.3 - Prob. 40ECh. 7.3 - Prob. 41ECh. 7.3 - Prob. 42ECh. 7.3 - 43. Quality control Each computer component that...Ch. 7.3 - Prob. 44ECh. 7.3 - 45. Lactose intolerance Lactose intolerance...Ch. 7.3 - 46. Quality control If 3% of all light bulbs a...Ch. 7.3 - 47. Quality control To test its shotgun shells, a...Ch. 7.3 - Prob. 48ECh. 7.3 - Prob. 49ECh. 7.3 - Prob. 50ECh. 7.3 - Prob. 51ECh. 7.3 - Prob. 52ECh. 7.3 - 53. Maintenance Twenty-three percent of the cars...Ch. 7.3 - Prob. 54ECh. 7.3 - 55. Testing An unprepared student must take a...Ch. 7.3 - Prob. 56ECh. 7.3 - Prob. 57ECh. 7.3 - 58. Racing Suppose that the odds that Blackjack...Ch. 7.3 - Prob. 59ECh. 7.3 - Prob. 60ECh. 7.3 - Prob. 61ECh. 7.3 - 62. Crime In an actual case.’ probability was used...Ch. 7.4 - CHECKPOINT
1. Urn I contains 3 gold coins, urn II...Ch. 7.4 - Prob. 2CPCh. 7.4 - In Problems 1-12, use probability trees to find...Ch. 7.4 - Prob. 2ECh. 7.4 - In Problems 1-12, use probability trees to find...Ch. 7.4 - Prob. 4ECh. 7.4 - In Problems 1-12, use probability trees to find...Ch. 7.4 - Prob. 6ECh. 7.4 - In Problems 1-12, use probability trees to find...Ch. 7.4 - In Problems 1-12, use probability trees to find...Ch. 7.4 - Prob. 9ECh. 7.4 - Prob. 10ECh. 7.4 - In Problems 1-12, use probability trees to find...Ch. 7.4 - In Problems 1-12, use probability trees to find...Ch. 7.4 - In Problems 13-16, use (a) a probability tree and...Ch. 7.4 - Prob. 14ECh. 7.4 - In Problems 13-16, use (a) a probability tree and...Ch. 7.4 - In Problems 13-16, use (a) a probability tree and...Ch. 7.4 - 17. Lactose intolerance Lactose intolerance...Ch. 7.4 - 18. Genetics What is the probability that a couple...Ch. 7.4 - 19. Marksmanship Suppose that a marksman hits the...Ch. 7.4 - 20. Majors In a random survey of students...Ch. 7.4 - 21. Quality control Suppose a box contains 3...Ch. 7.4 - 22. Education The probability that an individual...Ch. 7.4 - 23. Alcoholism A small town has 8000 adult males...Ch. 7.4 - Prob. 24ECh. 7.4 - Prob. 25ECh. 7.4 - 26. Insurance rates Ideally, auto insurance rates...Ch. 7.4 - 27. Pregnancy test A self-administered pregnancy...Ch. 7.4 - Prob. 28ECh. 7.4 - 29. Survey In a Student Activity Participation...Ch. 7.4 - Prob. 30ECh. 7.5 - CHECKPOINT
1. If a state permits either a letter...Ch. 7.5 - Prob. 2CPCh. 7.5 - Prob. 3CPCh. 7.5 - Prob. 4CPCh. 7.5 - Prob. 5CPCh. 7.5 - 1. Compute .
Ch. 7.5 - Prob. 2ECh. 7.5 - 3. Compute .
Ch. 7.5 - 4. Compute .
Ch. 7.5 - 5. Compute .
Ch. 7.5 - Prob. 6ECh. 7.5 - 7. How many four-digit numbers can be formed from...Ch. 7.5 - Prob. 8ECh. 7.5 - 9. Compute .
Ch. 7.5 - Prob. 10ECh. 7.5 - Prob. 11ECh. 7.5 - Prob. 12ECh. 7.5 - Prob. 13ECh. 7.5 - Prob. 14ECh. 7.5 - 15. Compute .
Ch. 7.5 - 16. Compute .
Ch. 7.5 - 17. Compute .
Ch. 7.5 - Prob. 18ECh. 7.5 - 19. Compute .
Ch. 7.5 - Prob. 20ECh. 7.5 - Prob. 21ECh. 7.5 - Prob. 22ECh. 7.5 - 23. Binz, not Benz Mercedes Benz E-Class sedans...Ch. 7.5 - 24. Ice cream cones Baskin-Robbins’logo includes...Ch. 7.5 - Prob. 25ECh. 7.5 - 26. Menu selections A restaurant has an early...Ch. 7.5 - Prob. 27ECh. 7.5 - 28. Racing Eight horses are entered in a race. In...Ch. 7.5 - Prob. 29ECh. 7.5 - 30. Testing An examination consists of 12...Ch. 7.5 - Prob. 31ECh. 7.5 - Prob. 32ECh. 7.5 - 33. Management A department store manager wants to...Ch. 7.5 - 34. Call letters The call letters for radio...Ch. 7.5 - Prob. 35ECh. 7.5 - 36. Testing How many ways can a 10-question...Ch. 7.5 - Prob. 37ECh. 7.5 - Prob. 38ECh. 7.5 - Prob. 39ECh. 7.5 - 40. Astronauts If 8 people are qualified for the...Ch. 7.5 - 41. Sales A traveling salesperson has 30 products...Ch. 7.5 - Prob. 42ECh. 7.5 - Prob. 43ECh. 7.5 - Prob. 44ECh. 7.5 - Prob. 45ECh. 7.5 - Prob. 46ECh. 7.5 - 47. Committees In how many ways can a committee...Ch. 7.5 - Prob. 48ECh. 7.5 - Prob. 49ECh. 7.5 - 50. Auto dealerships An auto dealer has 4 cars, 2...Ch. 7.6 - CHECKPOINT
1. If three wires (red, black, and...Ch. 7.6 - Prob. 2CPCh. 7.6 - 1. Education If a child is given cards with A, C,...Ch. 7.6 - Prob. 2ECh. 7.6 - Politics A poll asks voters to rank Social...Ch. 7.6 - 4. Photography Two men and a woman are lined up to...Ch. 7.6 - 5. License plates Suppose that all license plates...Ch. 7.6 - Prob. 6ECh. 7.6 - 7. ATMs
(a) An automatic teller machine requires...Ch. 7.6 - 8. Keys Keys for antique General Motors cars had...Ch. 7.6 - 9. Phone numbers If the first digit of a...Ch. 7.6 - Prob. 10ECh. 7.6 - 11. Rewards As a reward for a record year, the Ace...Ch. 7.6 - 12. Mutual funds The retirement plan for a company...Ch. 7.6 - 13. Testing In a 10-question matching test with 10...Ch. 7.6 - Prob. 14ECh. 7.6 - 15. Quality control A box of 12 batteries has 3...Ch. 7.6 - 16. Quality control Suppose that 6 batteries are...Ch. 7.6 - 17. Quality control A retailer purchases 100 of a...Ch. 7.6 - Prob. 18ECh. 7.6 - 19. Banking To see whether a bank has enough...Ch. 7.6 - 20. Diversity A high school principal must select...Ch. 7.6 - 21. Diversity Suppose that an employer plans to...Ch. 7.6 - 22. Lottery Four men and three women are...Ch. 7.6 - Prob. 23ECh. 7.6 - 24. Sales A car dealer has 12 different cars that...Ch. 7.6 - 25. Diversity Suppose that two openings on an...Ch. 7.6 - Prob. 26ECh. 7.6 - 27. Management Suppose that an indecisive company...Ch. 7.6 - 28. Quality control Suppose that 10 computer chips...Ch. 7.6 - Prob. 29ECh. 7.6 - Prob. 30ECh. 7.6 - Prob. 31ECh. 7.6 - 32. Evaluation Employees of a firm receive annual...Ch. 7.6 - Prob. 33ECh. 7.6 - Prob. 34ECh. 7.6 - 35. Poker A flush (5 cards from the same suit) is...Ch. 7.6 - Prob. 36ECh. 7.6 - Prob. 37ECh. 7.7 - Prob. 1CPCh. 7.7 - Can the vectors in Problems 1-4 be probability...Ch. 7.7 - Prob. 2ECh. 7.7 - Can the vectors in Problems 1-4 be probability...Ch. 7.7 - Can the vectors in Problems 1-4 be probability...Ch. 7.7 - Prob. 5ECh. 7.7 - Prob. 6ECh. 7.7 - Prob. 7ECh. 7.7 - Prob. 8ECh. 7.7 - In Problems 9-12, use the given transition matrix...Ch. 7.7 - Prob. 10ECh. 7.7 - Prob. 11ECh. 7.7 - Prob. 12ECh. 7.7 - Prob. 13ECh. 7.7 - Prob. 14ECh. 7.7 - 15. Use the matrix and initial probability vector...Ch. 7.7 - Prob. 16ECh. 7.7 - In Problems 17-20, find the steady-state vector...Ch. 7.7 - Prob. 18ECh. 7.7 - Prob. 19ECh. 7.7 - Prob. 20ECh. 7.7 - Politics Use the following information for...Ch. 7.7 - Prob. 22ECh. 7.7 - Church attendance Use the following information...Ch. 7.7 - Church attendance Use the following information...Ch. 7.7 - Church attendance Use the following information...Ch. 7.7 - Prob. 26ECh. 7.7 - Car selection Use the following information for...Ch. 7.7 - Prob. 28ECh. 7.7 - Prob. 29ECh. 7.7 - Prob. 30ECh. 7.7 - Prob. 31ECh. 7.7 - Car selection Use the following information for...Ch. 7.7 - 33. Population demographics Suppose a government...Ch. 7.7 - Prob. 34ECh. 7.7 - Prob. 35ECh. 7.7 - Prob. 36ECh. 7.7 - Prob. 37ECh. 7.7 - Prob. 38ECh. 7.7 - Prob. 39ECh. 7.7 - Prob. 40ECh. 7 - 1. If one ball is drawn from a bag containing 9...Ch. 7 - 2. Suppose a ball is drawn from a bag containing 9...Ch. 7 - 3. If the probability that an event E occurs is...Ch. 7 - 4. Suppose that a fair coin is tossed two times....Ch. 7 - 5. Suppose that a fair coin is tossed three times....Ch. 7 - 6. A card is drawn at random from an ordinary deck...Ch. 7 - 7. A deck of 52 cards is shuffled. A card is...Ch. 7 - Prob. 8RECh. 7 - Prob. 9RECh. 7 - Prob. 10RECh. 7 - 11. A bag contains 4 red balls numbered 1, 2, 3, 4...Ch. 7 - 12. A bag contains 4 red balls and 3 black balls....Ch. 7 - 13. A box contains 2 red balls and 3 black balls....Ch. 7 - Prob. 14RECh. 7 - 15. A bag contains 8 white balls, 5 red balls, and...Ch. 7 - Prob. 16RECh. 7 - Prob. 17RECh. 7 - Prob. 18RECh. 7 - 19. Bag A contains 3 red, 6 black, and 5 white...Ch. 7 - Prob. 20RECh. 7 - Prob. 21RECh. 7 - Prob. 22RECh. 7 - 23. How many combinations of 8 things taken 5 at a...Ch. 7 - Prob. 24RECh. 7 - Prob. 25RECh. 7 - 26. Find the steady-state vector associated with...Ch. 7 - 27. Senior citizens In a certain city, 30,000...Ch. 7 - Prob. 28RECh. 7 - 29. United Nations Of 100 job applicants to the...Ch. 7 - Prob. 30RECh. 7 - Prob. 31RECh. 7 - Productivity Suppose that in a study of leadership...Ch. 7 - 33. Quality control A product must pass an initial...Ch. 7 - 34. Auto styles A certain make of car comes with...Ch. 7 - Prob. 35RECh. 7 - 36. Purchasing A regional survey found that of...Ch. 7 - 37. Quality control In a manufacturing process...Ch. 7 - 38. Management A personnel director ranks 4...Ch. 7 - Prob. 39RECh. 7 - Prob. 40RECh. 7 - Prob. 41RECh. 7 - 42. Juries A jury will be deadlocked if one or...Ch. 7 - 43. License plates The RBC Heritage Classic...Ch. 7 - Prob. 44RECh. 7 - Prob. 45RECh. 7 - Prob. 46RECh. 7 - 47. Lottery If a person “boxes” (see Problem 46) a...Ch. 7 - 48. Quality control A supplier has 200 compact...Ch. 7 - 49. Stocks Mr. Way must sell stocks from 3 of the...Ch. 7 - 50. Quality control A sample of 6 fuses is drawn...Ch. 7 - Income levels Use the following information for...Ch. 7 - Prob. 52RECh. 7 - Prob. 1TCh. 7 - Prob. 2TCh. 7 - A bag contains three white balls numbered 1, 2, 3...Ch. 7 - A bag contains three white balls numbered 1, 2, 3...Ch. 7 - A bag contains three white balls numbered 1, 2, 3...Ch. 7 - Prob. 6TCh. 7 - Prob. 7TCh. 7 - Prob. 8TCh. 7 - Prob. 9TCh. 7 - 10. A cat hits the letters on a computer keyboard...Ch. 7 - Prob. 11TCh. 7 - Prob. 12TCh. 7 - Prob. 13TCh. 7 - Prob. 14TCh. 7 - Prob. 15TCh. 7 - 16. Computer chips come from two suppliers, with ...Ch. 7 - 17. A placement test is given by a university to...Ch. 7 - 18. Lactose intolerance affects about of...Ch. 7 - Prob. 19TCh. 7 - Prob. 20TCh. 7 - Prob. 21TCh. 7 - 22. A publishing company has determined that a new...
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- There are X-Mart and Y-Mart convenience stores. It is assumed that each customer purchases once a week at one of the two supermarkets (but not both). In a study, a sample of 100 buyers was taken for 10 weeks. From this research it is known that if buyers go to X-mart store one week, 85 people will still buy at X-mart store the following week and if buyers go to Y-mart store one week, 70 people will still buy at Y-mart store. mart the following week. 1. Make a table and matrix of transition probabilities. 2. If John purchases at X-mart in the first week, what is the probability that Bob purchases at X-store in the third and fourth weeks?arrow_forwardProblem: A bank rewards its employees by giving awards to any employee who is cited by a customer for giving special service. Each award consists of two gift certificates contained in a sealed envelope. Each envelope contains certificates for one of the five following combina- tions of items:arrow_forwardEach of us has an ABO blood type. We get this blood type by inheriting two alleles-one from our mother and one from our father. Each of these alleles can be A, B, or O and the combination of the two that we inherit determines our blood type. The table below explains the combinations of alleles and the blood types those combinations produce. Blood Type Alleles Inherited A and A A and B A and O B and B B and O O and O A AB A B B O Harper has alleles A and O (therefore blood type A) and Taylor has alleles A and B (therefore blood type AB). On your own paper, fill in the chart of the possible combinations of alleles that their children could inherit: allele from Taylor A B allele from Harper A O Then list the possible blood types their children can have and the probabilities of each type.arrow_forward
- Researchers were interested in studying the relationship between living location (Manhattan vs. other boroughs of NYC) and anxiety. Researchers decided to randomly select 50 residents from Manhattan and 40 residents from the other four boroughs. All were free from anxiety disorders at the start of the study. They then followed the participants for three years to determine how many in each group developed an anxiety disorder. Among residents of Manhattan, 18 out of 50 developed an anxiety disorder. Among residents of the other four boroughs, 12 out of 40 developed an anxiety disorder. Question : The risk of developing an anxiety disorder for those living in Manhattan was _______ times the risk of developing an anxiety disorder for those living in the other boroughs.arrow_forwardExample 2.9 Suppose that a particular trait of a person (such as eye color or left handedness) is classified on the basis of one pair of genes and suppose that d represents a dominant gene and r a recessive gene. Thus a person with dd genes is pure dominance, one with rr is pure recessive, and one with rd is hybrid. The pure dominance and the hybrid are alike in appearance. Chil- dren receive one gene from each parent. If, with respect to a particular trait, two hybrid parents have a total of four children, what is the probability that exactly three of the four children have the outward appearance of the dominant gene?arrow_forwardHuman blood may contain either or both of two antigens, A and B. Blood that contains only the A antigen is called type A, blood that contains only the B antigen is called type B, blood that contains both antigens is called type AB, and blood that contains neither antigen is called type O. At a certain blood bank, 35% of the blood donors have type A blood, 10% have type B, and 5% have type AB. (i) What is the probability that a randomly chosen blood donor is type O? (ii) A recipient with type A blood may safely receive blood from a donor whose blood does not contain the B antigen. What is the probability that a randomly chosen blood donor may donate to a recipient with type A blood? (b) A box contains 10 fuses. Eight of them are rated at 10 amperes (A) and the other two are rated at 15 A. Two fuses are selected at random. (i) What is the probability that the first fuse is rated at 15 A? (ii) What is the probability that the second fuse israted at 15 A, given that the first fuse is rated…arrow_forward
- Mr. Cross, Mr. Jones, and Mr. Smith all suffer from coronary heart disease. As part of their treatment, they were put on special low-cholesterol diets: Cross on Diet I, Jones on Diet II and Smith on Diet III. Progressive records of each patient's cholesterol level were kept. At the beginning of the first, second, third, and fourth months, the cholesterol levels of the three patients were as follows. Cross: 210, 205, 195, and 185Jones: 230, 220, 215, and 210Smith: 230, 225, 220, and 210. (a) Represent this information in a 3 ✕ 4 matrix A. 1 2 3 4 Mr. Cross Mr. Jones Mr. Smith Find a24 and explain its meaning. a24 = represents ---Select--- Mr. Cross Mr. Jones Mr. Smith cholesterol at the beginning of the ---Select--- first second third fourth month. (b) Represent this information using a 4 ✕ 3 matrix B. Mr. Cross Mr. Jones Mr. Smith 1 2 3 4…arrow_forward(b) Tiffany obtained data about the gross domestic product (GDP) and the birth rate for 170 countries. She classified each GDP and each birth rate as either "low", "medium" or "high". There were 74 countries that had a medium GDP and 43 countries that had a high GDP. Among the countries that have 58 low birth rate, there were 3 countries that have a low GDP and 20 countries that have a medium GDP, whereas among the countries that have high birth rate, there were 45 countries that have a low GDP, 12 countries have a medium GDP and no country has a high GDP. i. Construct a contingency table to represent the information above. One of these countries is chosen at random. Find the probability that The country chosen has a low GDP or a medium birth rate. ii. iii. The country chosen has a low birth rate, given that it does not have a medium GDP. iv. States with a reason whether or not the events 'the country chosen has a medium GDP' and 'the country chosen has a medium birth rate' are…arrow_forwardThe manager of the Ewing and Barnes Department Store has four employees available to assign to three departments in the store lamps, sporting goods, and linens. The manager wants each of these departments to have at least one employee, but not more than two. Therefore, two departments will be assigned one employee, and one department will be assigned two. Each employee has different areas of expertise, which are reflected in the daily sales each employee is expected to generate in each department, as follows: Department Sales Employee Lamps Sporting Goods Linens 1 $130 $150 $ 90 2 275 300 100 3 180 225 140 4 200 120 160 The manager wishes to know which employee(s) to assign to each department in order to maximize expected sales.arrow_forward
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