The average cost of tuition, room and board at small, liberal arts colleges is reported to be $8,500 per term, but Mary Jane (a college...

The average cost of tuition, room and board at small, liberal arts colleges is reported to be $8,500 per term, but Mary Jane (a college administrator) believes it is more. Mary Jane's study, using a sample of 150 small, liberal arts colleges, reveals an average cost of $8,745, with a standard deviation of $1,200.  α = 0.04 (Hint: the alternate hypothesis is