Introductory Statistics (2nd Edition)
Introductory Statistics (2nd Edition)
2nd Edition
ISBN: 9780321978271
Author: Robert Gould, Colleen N. Ryan
Publisher: PEARSON
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Chapter 13, Problem 58CRE

Resampling Texts Using the data from Exercise 13.25, we used a randomization test to find out whether the typical number of texts sent by men is less than the typical number sent by woman. The histogram shows the results of 1000 randomizations of the data. In each randomization, we found the mean difference brines two groups that were randomly selected from the combined group of data: the combined data for the men and women. Note that. just as you would expect under the null hypothesis, the distribution is centered at about 0. The observed difference in means (men minus women) is shown by the red vertical line. The sample mean for women was 28.52. and the sample mean for men was 27.01. The p-value for the one-sided hypothesis that women send more texts is shown in the numerical output. Does this show that women tend to send significantly more text messages than men? Use a significance level of 0.05 and assume the sample is randomly selected from the population. Comment on both the histogram and the table of output.

Chapter 13, Problem 58CRE, Resampling Texts Using the data from Exercise 13.25, we used a randomization test to find out

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Chapter 13 Solutions

Introductory Statistics (2nd Edition)

Ch. 13 - Circuit City (Example 2) A statistics student who...Ch. 13 - Morning Routine A statistics student conducted a...Ch. 13 - Exercise Hours A statistics student was interested...Ch. 13 - Television Viewing A Nielsen poll asked people the...Ch. 13 - Lead Exposure (Example 3) Excessive lead levels...Ch. 13 - Juvenile Delinquents Dr. Kirkland R. Gable (in...Ch. 13 - The Stroop Effect Suppose you had to identify the...Ch. 13 - Reading Material on Colored Paper In the past,...Ch. 13 - Males’ Pulse Rates Students in a statistics class...Ch. 13 - Females’ Pulse Rates Refer to exercise 13.19. This...Ch. 13 - Ages of Brides and Grooms A random sample of the...Ch. 13 - Textbook Prices A student was interested in...Ch. 13 - Meat-Eating Behavior (Example 4) A researcher was...Ch. 13 - Credit Card Debt A statistics student who was...Ch. 13 - Texting Suppose a group of randomly selected...Ch. 13 - Sleep Typically, do men and women sleep different...Ch. 13 - Cell Phone Bills Cell phone bills (rounded to the...Ch. 13 - Weights of Athletes Data were collected on the...Ch. 13 - Happiness A StatCrunch survey of happiness...Ch. 13 - Soda A StatCrunch survey was done asking what...Ch. 13 - Sports and Extraversion (Example 5) Are students...Ch. 13 - Happiness Are women happier than men? A StatCrunch...Ch. 13 - College Students and Credit Card Debt In exercise...Ch. 13 - Soda Does soda constitute a larger part of the...Ch. 13 - Rainfall In a well-known study on the effects of...Ch. 13 - Rainfall Refer to exercise 13.35, which discussed...Ch. 13 - Randomization Exercise 13.35 describes a...Ch. 13 - Randomization Exercise 13.35 describes a...Ch. 13 - Ages of Married Couples You have date on the ages...Ch. 13 - For exercises 13.39 through 13.46, choose from the...Ch. 13 - Voicemail Suppose you are interested in the length...Ch. 13 - For exercises 13.39 through 13.46, choose from the...Ch. 13 - Ages of Students Suppose you have the ages of a...Ch. 13 - Car Repairs Suppose you want to determine whether...Ch. 13 - Grocery Prices Suppose a random sample of grocery...Ch. 13 - For exercises 13.39 through 13.46, choose from the...Ch. 13 - Ice Cream Cones McDonald’s claims that its ice...Ch. 13 - Average Body Temperatures Many people believe that...Ch. 13 - Contacting Mom Random samples of 30 professors of...Ch. 13 - 13.50 through 13.54 Texts Sent and Received...Ch. 13 - 13.50 through 13.54 Texts Sent and Received...Ch. 13 - 13.50 through 13.54 Texts Sent and Received...Ch. 13 - 13.50 through 13.54 Texts Sent and Received...Ch. 13 - 13.50 through 13.54 Texts Sent and Received...Ch. 13 - Geometric Mean The dotplot shows the number of...Ch. 13 - Looking at the data about contacting mom (exercise...Ch. 13 - Resampling Moms We performed a randomization test...Ch. 13 - Resampling Texts Using the data from Exercise...

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