no matter what I do, or how much I read the text book. I just can't take it anymore!!! 
Assume that body temperatures of healthy adults are normally distributed with a mean of 98.2 F and a standard deviation of 0.62 F. Calculate the standard deviation of the sampling distribution of X bar for a sample size of 15.
A.) 0.041 B.) 0.160 C.) 0.203 D.) 0.62
Assume that body temperatures of healthy adults are normally distributed with a mean of 98.2 F and a standard deviation of 0.62 F. Calculate the standard deviation of the sampling distribution of X bar for a sample size of 15.
A.) 0.041 B.) 0.160 C.) 0.203 D.) 0.62