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Repair Cost for Microwave OvensThe average repair cost of
Chapter 6, Problem 27CQ(choose chapter or problem)
Problem 27CQ
Repair Cost for Microwave OvensThe average repair cost of a microwave oven is $55, with a standard deviation of $8. The costs are normally distributed. If 12 ovens are repaired, find the probability that the mean of the repair bills will be greater than $60.
Questions & Answers
QUESTION:
Problem 27CQ
Repair Cost for Microwave OvensThe average repair cost of a microwave oven is $55, with a standard deviation of $8. The costs are normally distributed. If 12 ovens are repaired, find the probability that the mean of the repair bills will be greater than $60.
ANSWER:
Answer
Step 1 of 1
(a)
The average repair cost of a microwave oven is $55, with a standard deviation of $8.
If 12 ovens are repaired, we are asked to find the probability that the mean of the repair bill will be greater than $60.
Assume the variable is normally distributed.