Asked by Tanya
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.
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?
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?
Answers
Answered by
Reiny
I got .1601
by using
http://davidmlane.com/hyperstat/z_table.html
just enter the values from your problem.
by using
http://davidmlane.com/hyperstat/z_table.html
just enter the values from your problem.
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