Question

In: Statistics and Probability

Please post a step by step solution. 1. The lifetimes of a product part are normally...

Please post a step by step solution.

1.

The lifetimes of a product part are normally distributed with a

mean of 5 years and a standard deviation of 1.5 years. What

percent of the parts have lifetimes between 3 and 7 years.

2.

A production process produces parts with weights that are

   normally distributed with a mean of 1.75 ounces and a standard

   deviation of 0.15 ounces. If specifications call for weights between

   1.50 and 2.25 ounces, what percent are not within specifications.

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Expert Solution

orchestra answered 1 year ago
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