In a random sample of four mobile devices, the mean repair cost was $70.00 and the standard deviation was $12.00. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 90% confidence interval for the population mean. Interpret the results. The 90% confidence interval for the population mean µ is ( ☐, ☐ ). (Round to two decimal places as needed.) The margin of error is $. (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below.

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