Confidence interval for the population mean
Find a 95% confidence interval for the population mean if a sample of size 20 has a mean of 18.2 and a sample standard deviation of 3.6
A. (14.600, 21.800)
B. (15.932, 20.468)
C. (16.515, 19.885)
D. (17.124, 19.176)
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