The diameter of a brand of tennis balls is approximately normallydistributed, with a mean of 2.55 inches and a standard deviation of 0.03 inch. A random sample of 11 tennis balls is selected. Complete parts(a) through(d) below.

a. What is the sampling distribution of themean?

A.

Because the population diameter of tennis balls is approximately normallydistributed, the sampling distribution of samples of size 11 will not be approximately normal.

B.

Because the population diameter of tennis balls is approximately normallydistributed, the sampling distribution of samples of size 11 will also be approximately normal.

C.

Because the population diameter of tennis balls is approximately normallydistributed, the sampling distribution of samples of size 11 will be the uniform distribution.

D.

Because the population diameter of tennis balls is approximately normallydistributed, the sampling distribution of samples of size 11 cannot be found.