A computer selects a number X from 3 to 9 randomly and uniformly. Round all answers to 4 decimal places where possible.
a. What is the distribution of X? X - UN
b. Suppose that the computer randomly picks 36 such numbers. What is the distribution of for this
selection of numbers. Ž - N(
c. What is the probability that the average of 36 numbers will be less than 5.2?

Here are the 30 best lifetime baseball batting averages of all time, arranged in order from lowest to highest: 0.319, 0.329, 0.330, 0.331, 0.331, 0.333, 0.333, 0.333, 0.334, 0.334, 0.334, 0.336, 0.337, 0.338, 0.338, 0.338, 0.340, 0.340, 0.341, 0.341, 0.342, 0.342, 0.342, 0.344, 0.344, 0.345, 0.346, 0.349, 0.358, 0.366 if you were to build a histogram of these data, which of the following would be the best choice of classes?