Monday

April 21, 2014

April 21, 2014

Posted by **DARLENE** on Friday, November 25, 2011 at 3:59pm.

- ELEMENTARY STATISTICS -
**DARLENE**, Friday, November 25, 2011 at 4:29pm50 MATH PROFESSORS WERE ASKED HOW LONG IT TAKES TO GRADE A STUDENT'S HOMEWORK ASSIGNMENT. THE MEAN GRADING TIME FOR THE SAMPLE WAS36.2 MINUTES WITH A STANDARD DEVIATION OF 4.8 MINUTES. WHAT IS THE 82% CONFIDENCE INTERVAL FOR THE MEAN GRADING TIME OF ALL MATH PROFESSORS?

- ELEMENTARY STATISTICS -
**PsyDAG**, Saturday, November 26, 2011 at 1:01amFirst, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you.

99% = mean ± 1.645 SD, .005 of scores are beyond at each end.

82% = mean ± 1.342 SD, .09 of scores are beyond at each end.

These values were found in a table table in the back of your statistics text labeled something like "areas under normal distribution."

**Related Questions**

statistic - 3 statistics professors and 7 chemistry professors are available to ...

Statistics - At one college, 2/3 of the professors have doctorates. If a student...

statistics - if the average number of textbooks in professors' offices is 16, ...

statistics - If the average number of textbooks in professors offices is 16 with...

Math - How do you figure this problem out? How many different committees can be ...

Math - The number of professors in a college is p and the number of students is ...

statistics - Women comprise 80.3% of all elementary school teachers. In a random...

Linguistcs - I cannot recommend visiting professors too highly. 1. I cannot ...

Probability - How many different committees can be formed from 5 professors, and...

statistics - 18 workers at a large assembly plant were asked the time it took to...