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Math Statistics Statistical Techniques in Business and Economics, 16th Edition

Explain the reason for using z-statistic as the test statistic.

Explain the reason for using z-statistic as the test statistic.

Solution Summary: The author explains the reason for using the z-statistic as the test statistic.

Statistical Techniques in Business and Economics, 16th Edition

Statistical Techniques in Business and Economics, 16th Edition

16th Edition

ISBN: 9780078020520

Author: Douglas A. Lind, William G Marchal, Samuel A. Wathen

Publisher: McGraw-Hill Education

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2-Proportion Test

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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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.

Chapter 15, Problem 31CE

a.

To determine

Explain the reason for using z-statistic as the test statistic.

b.

To determine

Write the null and alternative hypotheses.

c.

To determine

Draw a diagram for the decision rule.

d.

To determine

Find the test statistic.

Obtain the decision.

e.

To determine

Find the p-value and explain it.

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Chapter 15, Problem 30E

Chapter 15, Problem 32CE

Chapter 15 Solutions

Statistical Techniques in Business and Economics, 16th Edition

Ch. 15 - A recent insurance industry report indicated that...Ch. 15 - The following hypotheses are given. H0:.70H1:.70 A...Ch. 15 - The following hypotheses are given. H0:=.40H1:.40...Ch. 15 - The National Safety Council reported that 52% of...Ch. 15 - Prob. 4E Ch. 15 - Prob. 5E Ch. 15 - Prob. 6E Ch. 15 - Prob. 2SR Ch. 15 - Prob. 7E Ch. 15 - The null and alternate hypotheses are: H0:1=2H1:12...

Ch. 15 - Prob. 9E Ch. 15 - GfK Research North America conducted identical...Ch. 15 - Prob. 11E Ch. 15 - Prob. 12E Ch. 15 - Prob. 3SR Ch. 15 - Prob. 13E Ch. 15 - Prob. 14E Ch. 15 - Prob. 15E Ch. 15 - Prob. 16E Ch. 15 - Prob. 17E Ch. 15 - Classic Golf Inc. manages five courses in the...Ch. 15 - Prob. 19E Ch. 15 - Prob. 20E Ch. 15 - Prob. 4SR Ch. 15 - Prob. 21E Ch. 15 - Prob. 22E Ch. 15 - Prob. 23E Ch. 15 - Prob. 24E Ch. 15 - Prob. 25E Ch. 15 - Advertising expenses are a significant component...Ch. 15 - Prob. 5SR Ch. 15 - Prob. 27E Ch. 15 - Prob. 28E Ch. 15 - Prob. 29E Ch. 15 - Prob. 30E Ch. 15 - Prob. 31CE Ch. 15 - Prob. 32CE Ch. 15 - Prob. 33CE Ch. 15 - Prob. 34CE Ch. 15 - Prob. 35CE Ch. 15 - Research in the gaming industry showed that 10% of...Ch. 15 - Prob. 37CE Ch. 15 - Prob. 38CE Ch. 15 - Prob. 39CE Ch. 15 - Prob. 40CE Ch. 15 - Prob. 41CE Ch. 15 - Prob. 42CE Ch. 15 - The Consumer Confidence Survey is a monthly review...Ch. 15 - Prob. 44CE Ch. 15 - Prob. 45CE Ch. 15 - Prob. 46CE Ch. 15 - Vehicles heading west on Front Street may turn...Ch. 15 - Prob. 48CE Ch. 15 - Prob. 49CE Ch. 15 - Prob. 50CE Ch. 15 - Prob. 51CE Ch. 15 - Prob. 52CE Ch. 15 - Prob. 53CE Ch. 15 - Prob. 54CE Ch. 15 - Prob. 55CE Ch. 15 - Prob. 56CE Ch. 15 - Prob. 57CE Ch. 15 - Prob. 58CE Ch. 15 - Prob. 59CE Ch. 15 - Prob. 60CE Ch. 15 - Did you ever purchase a bag of MMs candies and...Ch. 15 - Refer to the Real Estate data, which report...Ch. 15 - Refer to the Baseball 2012 data, which report...Ch. 15 - Refer to the Buena School District bus...

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