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Question

Construct the 95% confidence interval for the population mean using the appropriate

distributions for the

three situations below.

a. A random sample of 50 people's body mass index has a mean of 27.7 and a standard.

deviation of 6.12.

b. The average yards per carry among all NFL running backs is 3.1 +/- 1.2 (1 SD). Data for

a random 20 running backs is:

2.8, 3.9, 5.0, 4.4, 3.3, 3.8, 4.8, 4.9, 3.8, 4.2,3.9, 3.6, 4.0, 3.7, 6.0, 7.2, 4.8, 2.9, 5.3, 4.5

c. Random sample of 13 people visiting Hawaii had an average length of stay of 11.3 days with a sample standard deviation of 2.7 day

Top Answer

c) 95% confidence... View the full answer

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