10th Edition

ISBN: 9781260364323

Author: Bluman

Publisher: MCG CUSTOM

Concept explainers

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Textbook Question

Chapter 13.2, Problem 14E

Television Viewers A researcher read that the median age for viewers of the Jimmy Fallon show is 52.7 years. To test the claim, 75 randomly selected viewers were surveyed, and 27 were under the age of 52.7. At α = 0.05, test the claim. Give one reason why an advertiser might like to know the results of this study. Use the P-value method.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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Chapter 13.2, Problem 13E

Chapter 13.2, Problem 15E

Chapter 13 Solutions

ELEMENTARY STATISTICS CONNECT CODE>CUS

Ch. 13.1 - The following table lists the percentages of...Ch. 13.1 - Exercises 131 1. What is meant by nonparametric...Ch. 13.1 - When should nonparametric statistics be used?Ch. 13.1 - Prob. 3E Ch. 13.1 - List the disadvantages of nonparametric...Ch. 13.1 - Prob. 5E Ch. 13.1 - Explain what is meant by the efficiency of a...Ch. 13.1 - Prob. 7E Ch. 13.1 - For Exercises 7 through 12, rank each set of data....Ch. 13.1 - For Exercises 7 through 12, rank each set of data....

Ch. 13.1 - Prob. 10E Ch. 13.1 - Prob. 11E Ch. 13.1 - Prob. 12E Ch. 13.2 - Clean Air An environmentalist suggests that the...Ch. 13.2 - Exercises 132 1. Why is the sign test the simplest...Ch. 13.2 - Prob. 2E Ch. 13.2 - Prob. 3E Ch. 13.2 - Prob. 4E Ch. 13.2 - For Exercises 5 through 20, perform these steps....Ch. 13.2 - Prob. 6E Ch. 13.2 - AID: 1825 | 12/01/2018 7. Annual Incomes for Men...Ch. 13.2 - Weekly Earnings of Women According to the Womens...Ch. 13.2 - Externships Fifty undergraduate students were...Ch. 13.2 - Lottery Ticket Sales A lottery outlet owner...Ch. 13.2 - Prob. 11E Ch. 13.2 - Deaths due to Severe Weather A meteorologist...Ch. 13.2 - Prob. 13E Ch. 13.2 - Television Viewers A researcher read that the...Ch. 13.2 - Prob. 15E Ch. 13.2 - Exam Scores A statistics professor wants to...Ch. 13.2 - Prob. 17E Ch. 13.2 - Effects of a Pill on Appetite A researcher wishes...Ch. 13.2 - Prob. 19E Ch. 13.2 - Routine Maintenance and Defective Parts A...Ch. 13.2 - Prob. 21EC Ch. 13.2 - Prob. 22EC Ch. 13.2 - Prob. 23EC Ch. 13.2 - 1, 8, 2, 6, 10, 15, 24, 33, 56, 41, 58, 54, 5, 3,...Ch. 13.2 - Prob. 25EC Ch. 13.3 - School Lunch A nutritionist decided to see if...Ch. 13.3 - Prob. 1E Ch. 13.3 - What is the parametric equivalent test for the...Ch. 13.3 - Prob. 3E Ch. 13.3 - Lengths of Prison Sentences A random sample of men...Ch. 13.3 - Prob. 5E Ch. 13.3 - Lifetimes of Handheld Video Games To test the...Ch. 13.3 - Prob. 7E Ch. 13.3 - Winning Baseball Games For the years 19701993 the...Ch. 13.3 - Prob. 9E Ch. 13.3 - Medical School Enrollments Random samples of...Ch. 13.3 - Prob. 11E Ch. 13.3 - Student Participation in a Blood Drive Students in...Ch. 13.4 - Pain Medication A researcher decides to see how...Ch. 13.4 - Prob. 1E Ch. 13.4 - Prob. 2E Ch. 13.4 - Prob. 3E Ch. 13.4 - For Exercises 3 and 4, find the sum of the signed...Ch. 13.4 - Prob. 5E Ch. 13.4 - Prob. 6E Ch. 13.4 - Prob. 7E Ch. 13.4 - Prob. 8E Ch. 13.4 - Prob. 9E Ch. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.4 - Prob. 11E Ch. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.4 - Prob. 13E Ch. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.5 - Prob. 1AC Ch. 13.5 - Prob. 1E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 3E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 5E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 7E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 9E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 11E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.6 - Tall Trees As a biologist, you wish to see if...Ch. 13.6 - Prob. 1E Ch. 13.6 - Prob. 2E Ch. 13.6 - Prob. 3E Ch. 13.6 - Prob. 4E Ch. 13.6 - Prob. 5E Ch. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 7E Ch. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 9E Ch. 13.6 - Prob. 10E Ch. 13.6 - Prob. 11E Ch. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 13E Ch. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 15E Ch. 13.6 - Daily Lottery Numbers Listed below are the daily...Ch. 13.6 - Prob. 17E Ch. 13.6 - Random Numbers Random? A calculator generated...Ch. 13.6 - Prob. 19E Ch. 13.6 - Gender of Shoppers Twenty shoppers are in a...Ch. 13.6 - Employee Absences A supervisor records the number...Ch. 13.6 - Skiing Conditions A ski lodge manager observes the...Ch. 13.6 - Prob. 23E Ch. 13.6 - Prob. 25E Ch. 13.6 - Speeding Tickets A police chief records the gender...Ch. 13.6 - Prob. 27E Ch. 13.6 - Prob. 28E Ch. 13.6 - Prob. 29EC Ch. 13.6 - Prob. 30EC Ch. 13.6 - Prob. 31EC Ch. 13.6 - Prob. 32EC Ch. 13.6 - Prob. 33EC Ch. 13 - For Exercises 1 through 13, follow this procedure:...Ch. 13 - Prob. 13.2.2RE Ch. 13 - Prob. 13.2.3RE Ch. 13 - Record High Temperatures Shown here are the record...Ch. 13 - Hours Worked by Student Employees Student...Ch. 13 - Prob. 13.4.6RE Ch. 13 - Prob. 13.4.7RE Ch. 13 - Prob. 13.5.8RE Ch. 13 - Prob. 13.5.9RE Ch. 13 - Prob. 13.6.10RE Ch. 13 - Prob. 13.6.11RE Ch. 13 - NBA Scoring Leaders The scoring leaders for the...Ch. 13 - Prob. 13.6.13RE Ch. 13 - Prob. 13.6.14RE Ch. 13 - Prob. 1DA Ch. 13 - Prob. 2DA Ch. 13 - Prob. 3DA Ch. 13 - Determine whether each statement is true or false....Ch. 13 - Prob. 2CQ Ch. 13 - Determine whether each statement is true or false....Ch. 13 - Determine whether each statement is true or false....Ch. 13 - Prob. 5CQ Ch. 13 - Prob. 6CQ Ch. 13 - Prob. 7CQ Ch. 13 - Prob. 8CQ Ch. 13 - Prob. 9CQ Ch. 13 - Prob. 10CQ Ch. 13 - Prob. 11CQ Ch. 13 - Complete the following statements with the best...Ch. 13 - Prob. 13CQ Ch. 13 - Prob. 14CQ Ch. 13 - Prob. 15CQ Ch. 13 - Prob. 16CQ Ch. 13 - Textbook Costs Samples of students majoring in law...Ch. 13 - Prob. 18CQ Ch. 13 - Prob. 19CQ Ch. 13 - Prob. 20CQ Ch. 13 - Prob. 21CQ Ch. 13 - Prob. 22CQ Ch. 13 - Prob. 23CQ Ch. 13 - Prob. 24CQ Ch. 13 - Prob. 25CQ Ch. 13 - Prob. 26CQ

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Solution Summary: The author explains that the null hypothesis indicates the claim. The test statistic is –2.31.

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