The gestation time of humans has an approximate normal distribution with a mean of 250 days and a standard deviation of 6.0 days. a simple random sample of newborns is taken. how large of a sample is needed so that the sampling distribution of has a standard deviation of 1 day?

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.