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In: Statistics and Probability

A drug company that manufactures a diet drug claims that those using the drug for 30...

A drug company that manufactures a diet drug claims that those using the drug for 30 days will lose at least 15 pounds. You sample 30 people who have used the drug and find that the average weight loss was 12 pounds with a standard deviation of 5 pounds.

(a) Test the claim at the .05 significance level.

(b) No claim was made by the company. They took a sample with the above results and ask you to construct a two-sided 95% confidence interval for the population mean.

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orchestra answered 2 years ago
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