Posted by Laws on .
A normally distributed population with 200 elements has a mean of 60 and a standard deviation of 10. The probability that the mean of a sample of 25 elements taken from this population will be smaller than 56 is:

Rioja 
Ken,
No one has looked at your question because you put your name where the subject goes, and Laws where your name goes. Repost your question with statistics, or math in the subject, and your name where it belongs. Please, provide what you think the answer is and show your work so we can try to help you.