Question: If 90% confidence interval for the mean head circumference for adult males. based on the reults of measuring head circumference for 60 adult meales, is

If 90% confidence interval for the mean head circumference for adult males. based on the reults of measuring head circumference for 60 adult meales, is (50.88, 59.74) inches what is the margin or error?

A. 3.65 inches

B. 4.43 inches

C. 3.44 inches

D. 3.26 inches

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