7th Edition

ISBN: 9781323839577

Author: Larson

Publisher: Pearson Custom Publishing

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Chapter 8, Problem 8.3.24RE

In Exercises 23 and 24, (a) identify the claim and state H₀ and H_α, (b) find the critical value(s) and identify the rejection region(s), (c) calculate d ¯ and s_d, (d) find the standardized test statistic t, (e) decide whether to reject or fail to reject the null hypothesis, and (f) interpret the decision in the context of the original claim. Assume the samples are random and dependent, and the populations are normally distributed.

24. A physical fitness instructor claims that a weight loss supplement will help users lose weight after two weeks. The table shows the weights (in pounds) of 9 adults before using the supplement and two weeks after using the supplement. At α = 0.10, is there enough evidence to support the physical fitness instructor’s claim?

Chapter 8, Problem 8.3.24RE, In Exercises 23 and 24, (a) identify the claim and state H0 and H, (b) find the critical value(s)

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 8, Problem 8.3.23RE

Chapter 8, Problem 8.4.25RE

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Chapter 8 Solutions

ELEMENTARY STATISTICS W/MYMATHLAB<CUSTM

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Solution Summary: The claim is that the weight loss supplement will help users lose weight after two weeks. The alternative hypothesis indicates the claim.

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