Question
A social aid office claims that the average score on a self-esteem test for older adults receiving government aid equals 65, with a standard deviation
A social aid office claims that the average score on a self-esteem test for older adults receiving government aid equals 65, with a standard deviation of 5. The test is applied to a random sample of 42 beneficiaries of the help, getting an average score equal to 60. Does this information contradict the welfare office? Use α = 0.05. Solve using the sample distribution approach of sample means.
a) Solve using the classical approach.
b) Solve using the p-value approach.
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Essentials Of Statistics For The Behavioral Sciences
Authors: Frederick J Gravetter, Larry B. Wallnau
8th Edition
1133956572, 978-1133956570
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