Multiple choices 4/50
Answer (Choose 1 answer)
A B Weights of women in one age group are normally distributed with a standard deviation of 13 lb. A researcher wishes to estimate the mean weight of all women in this age group. Find how large a sample must be drawn in order to be 90 percent confident that the sample mean will not differ from the population mean by more than 3.5 lb.
Let 20.05 1.645; 2011.281
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A. None of the other choices is correct
B. 38
C. 44
D. 23
E. 32
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