Suppose that the cost of annual tuition at colleges is normally distributed, with an average annual cost of $13, XXXXXXXXXXThe standard deviation of tuition is $4, XXXXXXXXXXWhat proportion of...

Suppose that the cost of annual tuition at colleges is normally distributed, with an average annual cost of $13,926.78. The standard deviation of tuition is $4,085.42. What proportion of colleges would be expected to have an annual tuition between the cost of College A with a tuition of $20,106.18 and College B with a tuition of $14,829.01?