Q.
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