A Large Midwestern University Is Interested in Estimating the Mean

question 36

Multiple Choice

A large Midwestern university is interested in estimating the mean time that students spend at the student recreation center per week. A previous study indicated that the standard deviation in time is about 40 minutes per week. If the officials wish to estimate the mean time within ± 10 minutes with a 90 percent confidence, what should the sample size be?

• A) 44
• B) 62
• C) 302
• D) Can't be determined without knowing how many students there are at the university.

---

Definitions:

Interference Theory

A theory suggesting that the ability to remember information is affected by competing information, either before or after the learning process.

Proactive Interference

The difficulty in learning new information because of the interference from existing, previously learned information.

Retroactive Interference

A phenomenon where newly acquired information interferes with the recall of previously learned information.

New Plays

Fresh or original theatrical productions not previously performed.