Quiz

Suppose the mean amount of money that American college students spend on books per quarter is $275 with a standard deviation of $60.  Two research projects were recently done.  The first surveyed 144 randomly selected students and the second surveyed 900 randomly selected students about their housing expenses.

A.  Determine the sampling distribution of each.
 

B.  In a complete sentence explain why part A indicates that the second survey provides a more accurate study.