Posted by **josh** on Saturday, June 28, 2014 at 1:31am.

The inside diameter of metal washers produced by a company are normally distributed with a mean of .5 inches and a standdrd deviation of .01 inches. Of all washers produced .8% of the washers are rejected because they are too small for a bolt used to test them. What is the diameter of the bolt used for the test?

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