Question
The average cost of tuition, room and board at small private liberal arts colleges is reported...
The average cost of tuition, room and board at small private liberal arts colleges is reported to be $9,000 per term, but a financial administrator believes that the average cost is higher. A study conducted using 450 small liberal arts colleges showed that the average cost per term is $9,700 with a standard deviation of $1,500. Let level of significance= 0.05. What is the critical z-value for this test?
A- 1.96
B- (-1.96)
c- 1.65
D- (-1.65)
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