The marketing manager for a software company is trying to de…

The marketing manager for a software company is trying to decide whether to market her company’s newest product by mail, on television, or through the Internet. She selects 20 communities to test-market the product, advertising through one media in each community. At the

The true length of boards cut at a sawmill for boards with a…

The true length of boards cut at a sawmill for boards with a listed length of 10 ft is normally distributed with a mean of 123 inches and a standard deviation of 1 inch.  What proportion of the boards will be over 125 inches in length? (answer to three decimal places as a proportion e.g. 0.502 is how I would like you to enter 50.2%)