A researcher wants to estimate the average height of college students at MDC, it is known the height of a MDCstudent follows a normal distribution with a mean of 68 inches with a standard deviation of 6 inches. The researcher collects a sample of 25 students and finds their average height is 72 inches with a standard deviation of 10 inches. What are the characteristics of the sampling distribution?

a) X~N(72,10)

b) X~N(68,6)

c) X~N(72,6)

d) X~N(68,10)

e) X~N(68,1.2)

f) X~N(72,1.2)

g) X~B(68,1.2)

h) X~B(72,1.2)