score:u of 1 pt 32or 40 (32 complete) HW Score: 69 3396, 34 67 of 50 pt 6.2.17 Q

Question

score:u of 1 pt 32or 40 (32 complete) HW Score: 69 3396, 34 67 of 50 pt 6.2.17 Question Help In a random sample of five microwave ovens, the mean repair cost was 560.00 and the standard deviation was $1300. Assume the variable is normally dlistributed and use a t-distribution to construct a 90% confidence interval for the population mean What is the margin of error of ? The 90% confidence interval for the population mean is (47 61 Round to two decimal places as needed) 7239) The margin of error is (Round to two decimal places as needed)

Explanation / Answer

T score for 90% confidence interval = t0.05,4 = 2.132

Margin of error = t0.05,4 * s / sqrt(n) = 2.132 * 13 / sqrt(5) = 12.39

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