Elementary Statistics (13th Edition)
13th Edition
ISBN: 9780134462455
Author: Mario F. Triola
Publisher: PEARSON
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Textbook Question
Chapter 6.4, Problem 6BSC
Using the Central Limit Theorem. In Exercises 5–8, assume that females have pulse rates that are
6. a. If 1 adult female is randomly selected, find the
b. If 25 adult females are randomly selected, find the probability that they have pulse rates with a mean greater than 70 beats per minute.
c. Why can the normal distribution be used in part (b), even though the
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Section 4.1 Introduction to Probability
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Question 10
Giving a test to a group of students, the grades and gender are summarized below
valuations
A
B
Male
10
18
6.
Female
9.
16
7
If one student was chosen at random,
find the probability that the student was male.
Probability =
(Please enter a reduced fraction.)
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Constructing Frequency Distributions. In Exercises Il-18, use the indicated data to
construct the frequency distribution. (The data for Exercises 13–16 can be downloaded at
TriolaStats.com.)
11. Old Faithful Listed below are sorted duration times (seconds) of eruptions of the Old
Faithful geyser in Yellowstone National Park. Use these times to construct a frequency distribu-
tion. Use a class width of 25 seconds and begin with a lower class limit of 125 seconds.
125-203 205 221 225-229 233 233 235 236 236 237 238 238 239 240 240
240240 241241 242 242 242 243 243 244 245 245 245 245 246 246 248
248 248 249 249 250 251 252 253 253 255 255 256 2S7 258 262 264
12. Tornadoes Listed below are the F-scale intensities of recent tornadoes in the United States.
Construct a frequency distribution. Do the intensities appear to have a normal distribution?
0 4 0 0 111 00 0 1 2 0 11 010 F Ill0
0111 10
010 0 1 0 0 1I1 30 0 0 0 0
3 000 2 0
13. Burger King Lunch Service Times Refer to Data Set 25 "Fast…
A recent random sample of 7 college graduates who found a job reported their GPA and entry level salary ( nearest thousand dollars).
GPA: 2.9,3.81,3.2,2.42,3.94,2.05,2.25
Salary:48,53,50,37,65,32,37
For a unit increase in GPA, how much more in Salary is predicted?
Chapter 6 Solutions
Elementary Statistics (13th Edition)
Ch. 6.1 - Normal Distribution Whats wrong with the following...Ch. 6.1 - Normal Distribution A normal distribution is...Ch. 6.1 - Standard Normal Distribution Identify the two...Ch. 6.1 - Notation What does the notation z indicate?Ch. 6.1 - Continuous Uniform Distribution. In Exercises 58,...Ch. 6.1 - Continuous Uniform Distribution. In Exercises 58,...Ch. 6.1 - Continuous Uniform Distribution. In Exercises 58,...Ch. 6.1 - Continuous Uniform Distribution. In Exercises 58,...Ch. 6.1 - Standard Normal Distribution. In Exercises 912,...Ch. 6.1 - Standard Normal Distribution. In Exercises 912,...
Ch. 6.1 - Standard Normal Distribution. In Exercises 912,...Ch. 6.1 - Standard Normal Distribution. In Exercises 912,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1316,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1316,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1316,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1316,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Standard Normal Distribution. In Exercises 1736,...Ch. 6.1 - Finding Bone Density Scores. In Exercises 3740...Ch. 6.1 - Finding Bone Density Scores. In Exercises 3740...Ch. 6.1 - Finding Bone Density Scores. In Exercises 3740...Ch. 6.1 - Finding Bone Density Scores. In Exercises 3740...Ch. 6.1 - Critical Values. In Exercises 4144, find the...Ch. 6.1 - Critical Values. In Exercises 4144, find the...Ch. 6.1 - Critical Values. In Exercises 4144, find the...Ch. 6.1 - Critical Values. In Exercises 4144, find the...Ch. 6.1 - Basis for the Range Rule of Thumb and the...Ch. 6.1 - Basis for the Range Rule of Thumb and the...Ch. 6.1 - Basis for the Range Rule of Thumb and the...Ch. 6.1 - Basis for the Range Rule of Thumb and the...Ch. 6.1 - Significance For bone density scores that are...Ch. 6.1 - Distributions In a continuous uniform...Ch. 6.2 - Birth Weights Based on Data Set 4 Births in...Ch. 6.2 - Birth Weights Based on Data Set 4 Births in...Ch. 6.2 - Normal Distributions What is the difference...Ch. 6.2 - Random Digits Computers are commonly used to...Ch. 6.2 - IQ Scores. In Exercises 58, find the area of the...Ch. 6.2 - IQ Scores. In Exercises 58, find the area of the...Ch. 6.2 - IQ Scores. In Exercises 58, find the area of the...Ch. 6.2 - IQ Scores. In Exercises 58, find the area of the...Ch. 6.2 - IQ Scores. In Exercises 912, find the indicated IQ...Ch. 6.2 - IQ Scores. In Exercises 912, find the indicated IQ...Ch. 6.2 - IQ Scores. In Exercises 912, find the indicated IQ...Ch. 6.2 - IQ Scores. In Exercises 912, find the indicated IQ...Ch. 6.2 - Seat Designs. In Exercises 1320, use the data in...Ch. 6.2 - Seat Designs. In Exercises 1320, use the data in...Ch. 6.2 - Seat Designs. In Exercises 1320, use the data in...Ch. 6.2 - Seat Designs. In Exercises 1320, use the data in...Ch. 6.2 - Seat Designs. In Exercises 1320, use the data in...Ch. 6.2 - Seat Designs. In Exercises 1320, use the data in...Ch. 6.2 - Seat Designs. In Exercises 1320, use the data in...Ch. 6.2 - Seat Designs. In Exercises 1320, use the data in...Ch. 6.2 - In Exercises 2124, use these parameters (based on...Ch. 6.2 - In Exercises 2124, use these parameters (based on...Ch. 6.2 - In Exercises 2124, use these parameters (based on...Ch. 6.2 - In Exercises 2124, use these parameters (based on...Ch. 6.2 - Eye Contact In a study of facial behavior, people...Ch. 6.2 - Designing a Work Station A common design...Ch. 6.2 - Jet Ejection Seats The U.S. Air Force once used...Ch. 6.2 - Quarters After 1964, quarters were manufactured so...Ch. 6.2 - Low Birth Weight The University of Maryland...Ch. 6.2 - Body Temperatures Based on the sample results in...Ch. 6.2 - Durations of Pregnancies The lengths of...Ch. 6.2 - Water Taxi Safety When a water taxi sank in...Ch. 6.2 - Large Data Sets. In Exercises 33 and 34, refer to...Ch. 6.2 - Large Data Sets. In Exercises 33 and 34, refer to...Ch. 6.2 - Curving Test Scores A professor gives a test and...Ch. 6.2 - Outliers For the purposes of constructing modified...Ch. 6.3 - Births There are about 11,000 births each day in...Ch. 6.3 - Sampling with Replacement The Orangetown Medical...Ch. 6.3 - Unbiased Estimators Data Set 4 Births in Appendix...Ch. 6.3 - Sampling Distribution Data Set 4 Births in...Ch. 6.3 - Good Sample? A geneticist is investigating the...Ch. 6.3 - College Presidents There are about 4200 college...Ch. 6.3 - In Exercises 710, use the same population of {4,...Ch. 6.3 - In Exercises 710, use the same population of {4,...Ch. 6.3 - In Exercises 710, use the same population of {4,...Ch. 6.3 - In Exercises 710, use the same population of {4,...Ch. 6.3 - In Exercises 1114, use the population of {34, 36,...Ch. 6.3 - In Exercises 1114, use the population of {34, 36,...Ch. 6.3 - In Exercises 1114, use the population of {34, 36,...Ch. 6.3 - In Exercises 1114, use the population of {34, 36,...Ch. 6.3 - Births: Sampling Distribution of Sample Proportion...Ch. 6.3 - Births: Sampling Distribution of Sample Proportion...Ch. 6.3 - SAT and ACT Tests Because they enable efficient...Ch. 6.3 - Hybridization A hybridization experiment begins...Ch. 6.3 - Using a Formula to Describe a Sampling...Ch. 6.3 - Mean Absolute Deviation Is the mean absolute...Ch. 6.4 - Requirements A researcher collects a simple random...Ch. 6.4 - Small Sample Weights of golden retriever dogs are...Ch. 6.4 - Notation In general, what do the symbols x and x...Ch. 6.4 - Annual Incomes Annual incomes are known to have a...Ch. 6.4 - Using the Central Limit Theorem. In Exercises 58,...Ch. 6.4 - Using the Central Limit Theorem. In Exercises 58,...Ch. 6.4 - Using the Central Limit Theorem. In Exercises 58,...Ch. 6.4 - Using the Central Limit Theorem. In Exercises 58,...Ch. 6.4 - Elevator Safety Example 2 referred to an elevator...Ch. 6.4 - Elevator Safety Exercise 9 uses = 189 lb, which...Ch. 6.4 - Mensa Membership in Mensa requires a score in the...Ch. 6.4 - Designing Manholes According to the website...Ch. 6.4 - Water Taxi Safety Passengers died when a water...Ch. 6.4 - Vending Machines Quarters are now manufactured so...Ch. 6.4 - Southwest Airlines Seats Southwest Airlines...Ch. 6.4 - Coke Cans Assume that cans of Coke are filled so...Ch. 6.4 - Redesign of Ejection Seats When women were finally...Ch. 6.4 - Loading a Tour Boat The Ethan Allen tour boat...Ch. 6.4 - Doorway Height The Boeing 757-200 ER airliner...Ch. 6.4 - Loading Aircraft Before every flight, the pilot...Ch. 6.4 - Correcting for a Finite Population In a study of...Ch. 6.5 - Normal Quantile Plot Data Set 1 Body Data in...Ch. 6.5 - Normal Quantile Plot After constructing a...Ch. 6.5 - Small Sample Data set 29 Coin Weights in Appendix...Ch. 6.5 - Assessing Normality The accompanying histogram is...Ch. 6.5 - Prob. 5BSCCh. 6.5 - Prob. 6BSCCh. 6.5 - Prob. 7BSCCh. 6.5 - Interpreting Normal Quantile Plots. In Exercises...Ch. 6.5 - Prob. 9BSCCh. 6.5 - Determining Normality. In Exercises 912, refer to...Ch. 6.5 - Determining Normality. In Exercises 912, refer to...Ch. 6.5 - Prob. 12BSCCh. 6.5 - Using Technology to Generate Normal Quantile...Ch. 6.5 - Using Technology to Generate Normal Quantile...Ch. 6.5 - Prob. 15BSCCh. 6.5 - Prob. 16BSCCh. 6.5 - Constructing Normal Quantile Plots. In Exercises...Ch. 6.5 - Prob. 18BSCCh. 6.5 - Constructing Normal Quantile Plots. In Exercises...Ch. 6.5 - Constructing Normal Quantile Plots. In Exercises...Ch. 6.5 - Transformations The heights (in inches) of men...Ch. 6.5 - Lognormal Distribution The following are the...Ch. 6.6 - Continuity Correction In testing the assumption...Ch. 6.6 - Checking Requirements Common tests such as the...Ch. 6.6 - Notation Common tests such as the SAT, ACT, LSAT,...Ch. 6.6 - Distribution of Proportions Each week, Nielsen...Ch. 6.6 - Using Normal Approximation. In Exercises 58, do...Ch. 6.6 - Using Normal Approximation. In Exercises 58, do...Ch. 6.6 - Using Normal Approximation. In Exercises 58, do...Ch. 6.6 - Using Normal Approximation. In Exercises 58, do...Ch. 6.6 - Car Colors. In Exercises 912, assume that 100 cars...Ch. 6.6 - Car Colors. In Exercises 912, assume that 100 cars...Ch. 6.6 - Car Colors. In Exercises 912, assume that 100 cars...Ch. 6.6 - Car Colors. In Exercises 912, assume that 100 cars...Ch. 6.6 - Tennis Replay In the year that this exercise was...Ch. 6.6 - Tennis Replay Repeat the preceding exercise after...Ch. 6.6 - Smartphones Based on an LG smartphone survey,...Ch. 6.6 - Eye Color Based on a study by Dr. P. Sorita at...Ch. 6.6 - Mendelian Genetics When Mendel conducted his...Ch. 6.6 - Sleepwalking Assume that 29.2% of people have...Ch. 6.6 - Voters Lying? In a survey of 1002 people, 701 said...Ch. 6.6 - Cell Phones and Brain Cancer In a study of 420,095...Ch. 6.6 - Births The probability of a baby being born a boy...Ch. 6.6 - Overbooking a Boeing 767-300 A Boeing 767-300...Ch. 6 - Bone Density Test. In Exercises 14, assume that...Ch. 6 - Bone Density Test. In Exercises 14, assume that...Ch. 6 - Bone Density Test. In Exercises 14, assume that...Ch. 6 - Bone Density Test. In Exercises 14, assume that...Ch. 6 - Notation a. Identify the values of and for the...Ch. 6 - In Exercises 610, assume that women have diastolic...Ch. 6 - In Exercises 610, assume that women have diastolic...Ch. 6 - In Exercises 610, assume that women have diastolic...Ch. 6 - In Exercises 610, assume that women have diastolic...Ch. 6 - In Exercises 610, assume that women have diastolic...Ch. 6 - Bone Density Test A bone mineral density test is...Ch. 6 - Biometric Security In designing a security system...Ch. 6 - Biometric Security Standing eye heights of men are...Ch. 6 - Sampling Distributions Scores on the Gilliam...Ch. 6 - Unbiased Estimators a. What is an unbiased...Ch. 6 - Disney Monorail The Mark VI monorail used at...Ch. 6 - Disney Monorail Consider the same Mark VI monorail...Ch. 6 - Assessing Normality Listed below are the recent...Ch. 6 - Hybridization Experiment In one of Mendels...Ch. 6 - Tall Clubs The social organization Tall Clubs...Ch. 6 - In Exercises 13, use the following recent annual...Ch. 6 - In Exercises 13, use the following recent annual...Ch. 6 - In Exercises 13, use the following recent annual...Ch. 6 - Blue Eyes Assume that 35% of us have blue eyes...Ch. 6 - Foot Lengths of Women Assume that foot lengths of...Ch. 6 - Assessing Normality It is often necessary to...Ch. 6 - Binomial Probabilities Section 6-6 described a...
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