In a study of the effectiveness of a certain diet, 100 subjects went on the diet for
Question:
In a study of the effectiveness of a certain diet, 100 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.
a. Find the t statistic for testing H0: μ = 0 versus H1:
μ > 0.
b. Find the P-value for testing H0: μ = 0 versus H1:
μ > 0.
c. 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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