# statistics

posted by
**courntey**
.

Pleas HeLp!!!!!!!!!!

A random sample of the test scores of 100 applicants for college entry at a large junior college showed a mean score of 72.6. Determine a 99%, 95%, and 90% confidence interval for the m

mean score of all applicants at the

junior college. Assume the standard deviation of test scores is 10.5.

PTS Confidence interval

4 1. 99% confidence level x

4 2. 95% confidence level x

4 3. 90% confidence level x