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Some plastic rods are automatically cut into lengths of 6

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Reference no: EM13628696

Some plastic rods are automatically cut into lengths of 6 in. Actual lengths are normally distributed about a mean of 6 in and their standard deviation is .06 inches.

A) What proportion of the rods exceeds tolerance limits of 5.9 inches and 6.1 inches?

B) To what value does the standard deviation need to be reduced if 99% of the rods must be within tolerance?

Reference no: EM13628696

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