SOLUTION: A diameters of bolts produced by a certain machine ae normally distributed with a mean of 0.30 inches and a standard deviatin of 0.01 inches. What percentage of bolts will have a
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Question 610142: A diameters of bolts produced by a certain machine ae normally distributed with a mean of 0.30 inches and a standard deviatin of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches?
I have: 0.32-0.30/0.01=2 Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! The z-score is:
0.32-0.30/0.01=2
.
Looking at the z-score table we find:
z-score of 2 = 0.9772
So, bolts larger than this would be:
1-0.9772 = 0.0228
Or
2% of bolts would be larger
