Fundamentals of Statistics (5th Edition)
5th Edition
ISBN: 9780134508306
Author: Michael Sullivan III
Publisher: PEARSON
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Textbook Question
Chapter 7.2, Problem 9AYU
In Problems 5–12, find the indicated areas. For each problem, be sure to draw a standard normal curve and shade the area that is to be found.
9. Determine the area under the standard normal curve that lies between
- a. z = −2.04 and z = 2.04
- b. z = −0.55 and z = 0
- c. z = −1.04 and z = 2.76
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9.2 Testing the Mean mu:
Problem 3
(1 point)
Test the claim that the population of sophomore college
students has a mean grade point average greater than 2.2.
Sample statistics include n = 71, x = 2.44, and s = 0.9.
Use a significance level of a = 0.01.
The test statistic is
The P-Value is between :
The final conclusion is
< P-value <
A. There is sufficient evidence to support the claim that
the mean grade point average is greater than 2.2.
○ B. There is not sufficient evidence to support the claim
that the mean grade point average is greater than 2.2.
Note: You can earn partial credit on this problem.
Note: You are in the Reduced Scoring Period. All work counts for
50% of the original.
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Oli
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There are four white, fourteen blue and five green marbles in a bag. A marble is selected from the bag without looking. Find the odds of the following:
The odds against selecting a green marble.
The odds in favour of not selecting a green marble
The odds in favor of the marble selected being either a white or a blue marble.
What is true about the above odds? Explain
Please show as much work as possible to clearly show the steps you used to find each solution. If you plan to use a calculator, please be sure to clearly indicate your strategy.
1. The probability of a soccer game in a particular league going into overtime is 0.125. Find the following:
a. The odds in favour of a game going into overtime.
b. The odds in favour of a game not going into overtime.
c. If the teams in the league play 100 games in a season, about how many games would you expect to go into overtime?
Chapter 7 Solutions
Fundamentals of Statistics (5th Edition)
Ch. 7.1 - A _____ _____ _____ is an equation used to compute...Ch. 7.1 - A _______ is an equation, table, or graph used to...Ch. 7.1 - True or False: The normal curve is symmetric about...Ch. 7.1 - The area under the normal curve to the right of ...Ch. 7.1 - The points at x = _____ and x = _____ are the...Ch. 7.1 - The area under a normal curve can be interpreted...Ch. 7.1 - For Problems 712, determine whether the graph can...Ch. 7.1 - For Problems 712, determine whether the graph can...Ch. 7.1 - For Problems 712, determine whether the graph can...Ch. 7.1 - Prob. 10AYU
Ch. 7.1 - For Problems 712, determine whether the graph can...Ch. 7.1 - For Problems 712, determine whether the graph can...Ch. 7.1 - Problems 1316 use the information presented in...Ch. 7.1 - Problems 1316 use the information presented in...Ch. 7.1 - Prob. 15AYUCh. 7.1 - Problems 1316 use the information presented in...Ch. 7.1 - Uniform Distribution The random-number generator...Ch. 7.1 - Uniform Distribution The reaction time X (in...Ch. 7.1 - In Problems 1922, determine whether or not the...Ch. 7.1 - In Problems 1922, determine whether or not the...Ch. 7.1 - In Problems 1922, determine whether or not the...Ch. 7.1 - In Problems 1922, determine whether or not the...Ch. 7.1 - One graph in the figure on the following page...Ch. 7.1 - One graph in the figure below represents a normal...Ch. 7.1 - In Problems 2528, the graph of a normal curve is...Ch. 7.1 - In Problems 2528, the graph of a normal curve is...Ch. 7.1 - Prob. 27AYUCh. 7.1 - In Problems 2528, the graph of a normal curve is...Ch. 7.1 - In Problems 29 and 30, draw a normal curve and...Ch. 7.1 - Prob. 30AYUCh. 7.1 - NW You Explain It! Cell Phone Rates Monthly...Ch. 7.1 - You Explain It! Refrigerators The lives of...Ch. 7.1 - You Explain It! Birth Weights The birth weights of...Ch. 7.1 - You Explain It! Height of 10-Year-Old Males The...Ch. 7.1 - NW You Explain It! Gestation Period The lengths of...Ch. 7.1 - Prob. 36AYUCh. 7.1 - Hitting with a Pitching Wedge In the game of golf,...Ch. 7.1 - Heights of Five-Year-Old Females The following...Ch. 7.1 - Cardiac Arrest Researchers conducted a prospective...Ch. 7.2 - A random variable Z that is normally distributed...Ch. 7.2 - The notation z is the z-score such that the area...Ch. 7.2 - If X is a normal random variable with mean 40 and...Ch. 7.2 - If X is normal random variable with mean 40 and...Ch. 7.2 - In Problems 512, find the indicated areas. For...Ch. 7.2 - In Problems 512, find the indicated areas. For...Ch. 7.2 - In Problems 512, find the indicated areas. For...Ch. 7.2 - In Problems 512, find the indicated areas. For...Ch. 7.2 - In Problems 512, find the indicated areas. For...Ch. 7.2 - In Problems 512, find the indicated areas. For...Ch. 7.2 - In Problems 512, find the indicated areas. For...Ch. 7.2 - In Problems 512, find the indicated areas. For...Ch. 7.2 - In Problems 1318, find the indicated z-score. Be...Ch. 7.2 - In Problems 1318, find the indicated z-score. Be...Ch. 7.2 - In Problems 1318, find the indicated z-score. Be...Ch. 7.2 - In Problems 1318, find the indicated z-score. Be...Ch. 7.2 - In Problems 1318, find the indicated z-score. Be...Ch. 7.2 - In Problems 1318, find the indicated z-score. Be...Ch. 7.2 - In Problems 1922, find the value of z. 19. NW...Ch. 7.2 - In Problems 1922, find the value of z. 20. z0.02Ch. 7.2 - In Problems 1922, find the value of z. 21. z0.025Ch. 7.2 - In Problems 1922, find the value of z. 22. z0.015Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 2332, assume that the random variable...Ch. 7.2 - In Problems 3336, assume that the random variable...Ch. 7.2 - In Problems 3336, assume that the random variable...Ch. 7.2 - In Problems 3336, assume that the random variable...Ch. 7.2 - In Problems 3336, assume that the random variable...Ch. 7.2 - Egg Incubation Times The mean incubation time of...Ch. 7.2 - Reading Rates The reading speed of sixth-grade...Ch. 7.2 - NW Chips Ahoy! Cookies The number of chocolate...Ch. 7.2 - Wendys Drive-Through Fast-food restaurants spend...Ch. 7.2 - Gestation Period The lengths of human pregnancies...Ch. 7.2 - Light Bulbs General Electric manufactures a...Ch. 7.2 - Manufacturing Steel rods are manufactured with a...Ch. 7.2 - Manufacturing Ball bearings are manufactured with...Ch. 7.2 - NCAA Basketball Point Spreads In sports betting,...Ch. 7.2 - Prob. 46AYUCh. 7.2 - NW Egg Incubation Times The mean incubation time...Ch. 7.2 - Reading Rates The reading speed of sixth-grade...Ch. 7.2 - Chips Ahoy! Cookies The number of chocolate chips...Ch. 7.2 - Wendys Drive-Through Fast-food restaurants spend...Ch. 7.2 - Speedy Lube The time required for Speedy Lube to...Ch. 7.2 - Putting It Together: Birth Weights The following...Ch. 7.2 - Prob. 53AYUCh. 7.2 - Prob. 54AYUCh. 7.2 - Explain why P(X 220) should be reported as ...Ch. 7.2 - The ACT and SAT are two college entrance exams....Ch. 7.3 - A _____ _____ _____ is a graph that plots observed...Ch. 7.3 - True or False: A normal score is the expected...Ch. 7.3 - In Problems 36, use the results in the table to...Ch. 7.3 - In Problems 36, use the results in the table to...Ch. 7.3 - In Problems 36, use the results in the table to...Ch. 7.3 - In Problems 36, use the results in the table to...Ch. 7.3 - In Problems 710, use a normal probability plot to...Ch. 7.3 - In Problems 710, use a normal probability plot to...Ch. 7.3 - In Problems 710, use a normal probability plot to...Ch. 7.3 - In Problems 710, use a normal probability plot to...Ch. 7.3 - Chips per Bag In a 1998 advertising campaign,...Ch. 7.3 - Hours of TV A random sample of college students...Ch. 7.3 - Putting It Together: Demon Roller Coaster Retrieve...Ch. 7.4 - In a binomial experiment with n trials and...Ch. 7.4 - When adding or subtracting 0.5 from X, we are...Ch. 7.4 - Suppose X is a binomial random variable. To...Ch. 7.4 - Suppose X is a binomial random variable. To...Ch. 7.4 - In Problems 514, a discrete random variable is...Ch. 7.4 - In Problems 514, a discrete random variable is...Ch. 7.4 - In Problems 514, a discrete random variable is...Ch. 7.4 - In Problems 514, a discrete random variable is...Ch. 7.4 - Prob. 9AYUCh. 7.4 - In Problems 514, a discrete random variable is...Ch. 7.4 - Prob. 11AYUCh. 7.4 - In Problems 514, a discrete random variable is...Ch. 7.4 - Prob. 13AYUCh. 7.4 - Prob. 14AYUCh. 7.4 - In Problems 1520, compute P(x) using the binomial...Ch. 7.4 - In Problems 1520, compute P(x) using the binomial...Ch. 7.4 - In Problems 1520, compute P(x) using the binomial...Ch. 7.4 - In Problems 1520, compute P(x) using the binomial...Ch. 7.4 - Prob. 19AYUCh. 7.4 - Prob. 20AYUCh. 7.4 - NW On-Time Flights According to American Airlines,...Ch. 7.4 - Prob. 22AYUCh. 7.4 - Prob. 23AYUCh. 7.4 - Sneeze According to a study done by Nick Wilson of...Ch. 7.4 - Males Living at Home According to the Current...Ch. 7.4 - Females Living at Home According to the Current...Ch. 7.4 - NW Boys Are Preferred In a Gallup poll, 37% of...Ch. 7.4 - Liars According to a USA Today Snapshot, 3% of...Ch. 7 - Use the figure to answer the questions that...Ch. 7 - In Problems 2 and 3, draw a standard normal curve...Ch. 7 - In Problems 2 and 3, draw a standard normal curve...Ch. 7 - Find the z-score such that the area to the right...Ch. 7 - Prob. 5RECh. 7 - Prob. 6RECh. 7 - Prob. 7RECh. 7 - Prob. 8RECh. 7 - Prob. 9RECh. 7 - Tire Wear Suppose that Dunlop Tire manufactures a...Ch. 7 - Wechsler Intelligence Scale The Wechsler...Ch. 7 - Major League Baseballs According to Major League...Ch. 7 - America Reads According to a Gallup poll, 46% of...Ch. 7 - Prob. 14RECh. 7 - Hector obtained a random sample of twenty recent...Ch. 7 - Density of Earth In 1798, Henry Cavendish obtained...Ch. 7 - Creative Thinking According to a USA Today...Ch. 7 - A continuous random variable X is uniformly...Ch. 7 - List the properties of the normal density curve.Ch. 7 - Prob. 20RECh. 7 - Prob. 1CTCh. 7 - Prob. 2CTCh. 7 - Prob. 3CTCh. 7 - Prob. 4CTCh. 7 - Prob. 5CTCh. 7 - Suppose that the talk time on the Apple iPhone is...Ch. 7 - The waist circumference of males 2029 years old is...Ch. 7 - Suppose the scores earned on Professor McArthurs...Ch. 7 - In a poll conducted by the Gallup organization,...Ch. 7 - Prob. 10CTCh. 7 - A continuous random variable X is uniformly...Ch. 7 - The reference interval for HDL cholesterol is...
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