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in-random-samples-of-64-boats-out-of-a-total-2400-boats-the-mean-number-of-defective-boats-is-3-2-with-a-sample-standard

In random samples of 64 boats out of a total 2400 boats, the mean number of defective boats is 3.2 with a sample standard deviation 0.8. The standard error of the mean is

A ~ 0.107

B ~ 0.40

C ~ 0.97

D ~ 0.097

Answer & Explanation
Answer:~ 0.097

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