23. Cholesterol Content The average cholesterol content of a certain brand of eggs is 215 milligrams, and the standard deviation is 15 milligrams. Assunme the vari- able is normally distributed. a. If...

23. Cholesterol Content The average cholesterol content

of a certain brand of eggs is 215 milligrams, and the

standard deviation is 15 milligrams. Assunme the vari-

able is normally distributed.

a. If a single egg is selected, find the probability

that the cholesterol content will be greater than

220 milligrams.

b. If a sample of 25 eggs is selected, find the probabil-

ity that the mean of the sample will be larger than

220 milligrams.