A Professor at a Large University Believes That Students Take

Essay

A professor at a large university believes that students take an average of 15 credit hours per term. A random sample of 24 students in her class of 250 students reported the following number of credit hours that they were taking:

$\begin{array}{|l|l|l|l|l|l|l|l|l|l|l|l|}\hline 12 & 13 & 14 & 14 & 15 & 15 & 15 & 16 & 16 & 16 & 16 & 16 \\\hline 17 & 17 & 17 & 18 & 18 & 18 & 18 & 19 & 19 & 19 & 20 & 21 \\\hline\end{array}$

-Find a 95% confidence interval for the number of credit hours taken by the students in the professor's class. Interpret your interval.