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OpenStudy (anonymous):
Suppose a random sample of 84 men has a mean foot length of 26.9 cm with a standard deviation of 2.1 cm. What is an 80% confidence interval for this data? Question 21 options: A.) 21.52 to 32.28 B.) 28.58 to 25.22 C.) 24.21 to 29.59 D.) 24.8 to 29
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