The Population of Lengths of Aluminum-Coated Steel Sheets Is Normally

Multiple Choice

The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.2 inches.A sample of four metal sheets is randomly selected from a batch.What is the probability that the average length of a sheet is between 30.25 and 30.35 inches long?

A) .9773
B) .0227
C) .0386
D) .0215