The hardness of a particular type of sheet metal sold by a local manufacturer has a normal distribution with a mean of 60 micra and a standard deviation of 3 micra. This type of sheet metal is said to...


The hardness of a particular type of sheet metal sold by a local manufacturer has a normal distribution with ameanof 60 micra and astandard deviationof 3 micra.


This type of sheet metal is said to conform to specification provided its hardness measure is between 54 and 66 micra. What percent of the manufacturer’s sheet metal can be expected to fall within the specification?



Sep 11, 2022
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