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A Sample of 12 Items Yields = 48

Question 21

Multiple Choice

A sample of 12 items yields A sample of 12 items yields = 48.5 grams and s = 1.5 grams.Assuming a normal distribution,construct a 90 percent confidence interval for the population mean weight. A) [47.722,49.278] B) [47.788,49.212] C) [45.806,51.194] D) [47.865,49.135] = 48.5 grams and s = 1.5 grams.Assuming a normal distribution,construct a 90 percent confidence interval for the population mean weight.


A) [47.722,49.278]
B) [47.788,49.212]
C) [45.806,51.194]
D) [47.865,49.135]

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