The average repair cost of a microwave oven is $55, with a

Last updated: 7/10/2022

The average repair cost of a microwave oven is $55, with a standard deviation of $8. The costs are normally distributed. If 12 (sample) ovens are repaired, find the probability that the mean of the repair bills will be greater than $60. .4985 .9845 .243 .015