in a random sample of six microwave ovens, the mean repair cost was $70.00 and the standard…
in a random sample of six microwave ovens, the mean repair cost was $70.00 and the standard deviation was $12.50. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence level for the population mean.a) 90%=b) what is the margin of error?c) interpret the results?
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