A random sample of 4 male adults was selected in order to test a weight-reduction program...

A random sample of 4 male adults was selected in order to test a weight-reduction program using a newly developed appetite suppressant. The men were put on the program for 4 weeks. The results of the study are given in the following table:


Name	Weight Before	Weight After	Before- After
Bob	206	200	6
Lou	212	205	7
Roy	167	162	5
Zac	192	186	6

A) Obtain a 95% confidence interval for the true mean weight loss after 4 weeks on the program.

B) Is there evidence at the 1% level to indicate that the weight -reduction program is working that the true mean weight is less after 4 weeks on the program? Write out the hypotheses, test statistic, decision rule and conclusion for this test.

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orchestra answered 1 year ago

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