Posted by **marylou** on Tuesday, July 27, 2010 at 11:12am.

In 2008 ACT,Inc reported that 74% of 1500 randomly selected college freshman rerurned to college the next year. Estimate the national freshman to sophomore retention rate.

a) Verify below the two condition are met for constructing a confidence interval for the population proportion.

b) What is the value of t a/2or z a/2 for 99% confidence interval

c) What is value of the margin of errorfor your interval?

## Answer this Question

## Related Questions

- Stats Anyone? - The first-year retention rate is the percentage of entering ...
- STATS HELP - Freshman-sophomore retention rate (FSRR) for a college is the ...
- statistics - An introductory psychology class has 9 freshman males, 15 freshman ...
- statistics - At a small college it is known from previous years that 35% of all ...
- statistics - Conduct a chi square analysis to determine whether sex and year in ...
- statistics - A survey was mailed to a total of 400 students; 100 were randomly ...
- essay - During my four years in high school, I have taken a lots of classes to ...
- Algebra - At Central High School, the sophomore class has 60 more students than ...
- math - between 1998 and 2004, the number of college freshman who planned to get ...
- Math - he freshman class at a major university contains 5160 students. This was ...

More Related Questions