Posted: September 26th, 2016

The local supermarket buys lettuce each day to ensure really fresh produce.

The local supermarket buys lettuce each day to ensure really fresh produce. Each morning any lettuce that is left from the previous days is sold to a dealer that resells it to farmers who use it to feed their animals. This week the supermarket can buy fresh lettuce for $4.00 a box. The lettuce is sold for $10.00 a box and the dealer that sells old lettuce is willing to pay $1.50 a box. Past history says that tomorrow demand for lettuce averages 250 boxes with a standard deviation of 34 boxes. How many boxes of lettuce should the supermarket purchase tomorrow?