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part a and b The ulna is a bone found in the forearm of humans. The length of the ulna is approximately normal. To estimate

part a and b

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The ulna is a bone found in the forearm of humans. The length of the ulna is approximately normal. To estimate the population mean length for male adults, 19 male adults are randomly selected. The sample mean of ulna length was 25.2 cm and the standard deviation was 1.1 cm. a. Calculate a 95% confidence interval for the population mean. b. Interpret a 95% confidence interval for the population mean

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