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Repair Costs: Computers In a random sample of 11 computers, the mean repair cost was $127.50 and the standard deviation was $38.75. Assume the repair cost is normally distributed.

1. Use a t-distribution to construct a 95% confidence interval for the population mean.

2. What is the margin of error, E, of ?

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Category:- Statistics and Probability
Reference No.:- M91007015

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