Tuesday

September 30, 2014

September 30, 2014

Posted by **kirk** on Thursday, August 12, 2010 at 11:14am.

the mean for his group to be 70. Alice corrected the remaining

20 papers and found that the mean for her

group was 80. What is the mean of the combined group

of 30 students?

- math -
**Ms. Sue**, Thursday, August 12, 2010 at 11:17am10 * 70 = 700

20 * 80 = 1600

700 + 1600 = 2300

2300 / 30 = ?

**Answer this Question**

**Related Questions**

statistics - To test the hypothesis that students who finish an exam first get ...

UOP - o test the hypothesis that students who finish an exam first get better ...

res/342 - To test the hypothesis that students who finish an exam first get ...

statistics - a study of 40 professors showed they spent on average 13.6 minutes ...

Completely Randomized ANOVA - Forty eight subjects were randomly assigned to one...

Math - a)in how many different ways can 8 exam papers be arranged in a line so ...

Stats - A study found that for adults the general self-efficacy scale mean score...

Statistics - Mr. Crandall has assigned a term paper due at the end of the ...

math - summer graded 25 math papers in 30 minutes.larry graded 22 papers in 20 ...

hum/176 - How Might You Determine If InformatiOn Found Online Is Trustworthy ...