A maker of tires for cars has a multitude of data to support the fact that the lifetime of their tires follows a normal distribution with a mean of 42,100 miles and a standard deviation of 2,510 miles.

Question

Find the probability that a randomly selected tire will have a lifetime of between 44,500 miles and 48,000 miles. Be certain that you round your z-values to two decimal places. Round your answer to 4 decimal places.

This is what I got:
0.3315

Am I correct?

Answer 1

I got .1601

by using

http://davidmlane.com/hyperstat/z_table.html

just enter the values from your problem.