3rd Edition

ISBN: 9781260707458

Author: Navidi

Publisher: MCGRAW-HILL CUSTOM PUBLISHING

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When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calcul…

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Chapter 9.3, Problem 33E

Does this diet work? In a study of the effectiveness of a certain diet, loo subjects went on the diet for a period of six months. The sample mean weight loss was 0.5 pound, with a sample standard deviation of 4 pounds.

Find the t statistic for testing H 0 : μ = 0 versus H 1 : μ > 0 .
Find the P-value for testing H 0 : μ = 0 versus H 1 : μ > 0 .
Can you conclude that the diet produces a mean weight loss that is greater than 0? Use the α = 0.05 level of significance.

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Chapter 9.3, Problem 32E

Chapter 9.3, Problem 34E

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Chapter 9 Solutions

ELEMENTARY STATISTICS(LL)(FD)

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Solution Summary: The author concludes that the Null Hypothesis is not rejected because there isn't enough evidence to claim the weight loss is greater than 0 at the 0.05 significance level.

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