Question

# In a random sample of fivefive microwave​ ovens, the mean repair cost was ​\$75.0075.00 and the...

In a random sample of

fivefive

microwave​ ovens, the mean repair cost was

​\$75.0075.00

and the standard deviation was

​\$14.0014.00.

Assume the population is normally distributed and use a​ t-distribution to construct a

9090​%

confidence interval for the population mean

muμ.

What is the margin of error of

muμ​?

Interpret the results. #### Earn Coins

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