Newbalance9975 Newbalance9975

11-03-2024
Mathematics

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Assume that in a random sample of size 200 from a population, a variable X has a mean of 20 and a median of 25. Also, the standard error of the mean is 4. The lower bound for the 95% confidence interval for the mean of X is approximately

a) 12
b) 16
c) 8

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