Asked by Tom Biggs
The repair cost for a certain model of laptop computer has a normal distribution with a mean of $100, and with a standard deviation of $25. If 16 ovens are sent for repairs, find the probability that the average cost of repairs will be within $10 of the mean.
Answers
Answered by
PsyDAG
It would help if you proofread your questions before you posted them.
Have no data on ovens.
Z = (score-mean)/SEm
SEm = SD/√n
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to Z.
Have no data on ovens.
Z = (score-mean)/SEm
SEm = SD/√n
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to Z.
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