Posted by **Sara** on Monday, January 16, 2012 at 7:33pm.

Can someone please help me on how to work this out?? I'm so super confused. Thanks!

A professor at Kaplan University claims that the average age of all Kaplan students is 36 years old. Use a 95% confidence interval to test the professor's claim. Is the professor's claim reasonable or not? Explain

- Statistics-Confidence Interval -
**Sharon**, Tuesday, January 17, 2012 at 8:25pm
First find the total age of all students from MM207(9062). Divide 9062 by the total students 244. The answer is 37.139 or 37. 95% confidence interval is 1.96. 37 + or - 1.96 =39 or 35. The professor's claim is quite reasonable.

- Statistics-Confidence Interval -
**PsyDAG**, Wednesday, January 18, 2012 at 2:16am
Apparently Sharon has more data than is indicated on your post. Also I don't know how she found the SD.

95% = mean ± 1.96 SD

## Answer This Question

## Related Questions

- statistics - 8. Assume that the MM207 Student Data Set is a random sample of all...
- STATISTICS - I need help with 2 questions-TODAY-HELP 8. Assume that the MM207 ...
- Math Statistics - 5. Students in an introductory statistics class were asked to ...
- statistics - Assume that you are preparing a report on MM207 statistics students...
- Statistics - Select a random sample of 30 student responses to question 6, "How ...
- Statistics - Select a random sample of 30 student responses to question 6, "How ...
- stats - The president of a large university wishes to estimate the average age ...
- statistics - My mean is 175.5 My standard deviation is=90.57 Sample=25 Formula ...
- Math Statistics - Students enrolled in an introductory statistics course at a ...
- Statistics - Professor York randomly surveyed 240 students at Oxnard University...

More Related Questions