SOLUTION: At a local grocery plant, employees must complete new machine setups within 30 minutes.New machine set-up times are normally distributed with a mean of 22 minutes and a standard de
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Question 757689: At a local grocery plant, employees must complete new machine setups within 30 minutes.New machine set-up times are normally distributed with a mean of 22 minutes and a standard deviation of 4 minutes.
a. What percent of new machine set ups take more than 30 minutes?
b. What percent of new machine set ups take between 19 and 25 minutes
Thanks!
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Calculate your 
-score.
For part a, look up the probability for the Z score, the probability for the setup taking LESS than 30 minutes, and subtract from 1 to get the probability of MORE than 30 minutes.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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