Math
The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.25 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.24 inches?
A. 79.13%
B. 82.46%
C. 84.13%
D. 84.46%
answer:C
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Answers
84.13%. The Z-score could be calculated by subtracting the mean from the value and dividing by the standard deviation which is (0.24-0.25)/0.01=-1. The percentage of bolts greater than 0.24 inches is 84.13% which can be obtained from the standard normal table.
