A Random Sample of 250 Students at a University Finds $15.6 \pm .324$

question 49

Short Answer

A random sample of 250 students at a university finds that these students take a mean of 15.6 credit hours per quarter with a standard deviation of 2.2 credit hours. Estimate the mean credit hours taken by a student each quarter using a 98% confidence interval. Round to the nearest thousandth. A) $15.6 \pm .324$
B) $15.6 \pm .219$
C) $15.6 \pm .021$
D) $15.6 \pm .014$

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