Chapter 17, Problem 58E

To determine

(a)

To find:

The mean and standard deviation of the distribution of the random variable $X$.

To determine

(b)

To calculate:

The chances that $X$ will fall somewhere between 3120 and 3280.

To determine

(c)

To find:

The chances that $X$ will fall somewhere between 3080 and 3200.

To determine

(d)

To find:

The chances that $X$ will fall somewhere between 3240 and 3280.