Question: The average cost of tuition, room and board at small private liberal arts colleges is reported to be $8,500 per term, but a financial administrator believes that the average cost is higher. A study conducted using 350 small liberal arts colleges showed that the average cost per term is $8,745 with a standard deviation of $1,200. Let = 0.05.

What is the critical z-value for this test?

A. +1.96

B. -1.96

C. + 1.65

D. 1.65