Hypothesis Testing,

The best approach to finding out how many days the machine will be calibrated.

- v- a. 11. A manufacturer of cereal has a machine that, when working properly, puts 20 ounce; of cereal on average into a box with a standard deviation of 1 ounce. Every morning workers weigh 25 lled boxes. If the average weight is '01? by more ox, company policy requires them to recalibrate the machine. In a sample of 100 days where the machine is working properly all day, on how many of the days is it expected the machine will be re-calibrated