?Finding Confidence Intervals. In Exercises 9–16, assume that each sample is a simple
Chapter 7, Problem 10(choose chapter or problem)
Finding Confidence Intervals. In Exercises 9–16, assume that each sample is a simple random sample obtained from a population with a normal distribution.
Atkins Weight Loss Program In a test of weight loss programs, 40 adults used the Atkins weight loss program. After 12 months, their mean weight loss was found to be 2.1 lb, with a standard deviation of 4.8 lb. Construct a 90% confidence interval estimate of the standard deviation of the weight loss for all such subjects. Does the confidence interval give us information about the effectiveness of the diet?
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