A Professor at a Large University Believes That Students Take

question 68

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.

---

Definitions:

Ear

The organ of hearing and equilibrium that detects sound waves and helps in maintaining balance.

Nose

The part of the human face or the forward part of the head of other vertebrates that includes the nostrils and is the primary organ for smelling and breathing.

Abdomen Rounded

A physical characteristic where the abdomen appears bulging or spherical, which can indicate various medical conditions or normal physiological variations.

Drum-like Sounds

Acoustic phenomena, often related to medical examinations, where sounds resemble that of a drum, typically suggesting the presence of air in a body cavity.