# We are studying the times required to solve two elementary math problems. Suppose we ask four students to attempt Problem A and four other

We are studying the times required to solve two elementary math problems. Suppose we ask four students to attempt Problem A and four other students to attempt Problem B. Assume everything is independent and normal. The results are presented below (in seconds) Problem A Problem B
20 35
30 20
15 50
40 40
Assuming that the variances are unequal, find a two-sided 95% confidence interval for the difference in the means between Problems A and B.

## This Post Has 4 Comments

1. Expert says:

11 mintues is the naswer

2. Expert says:

30005

yes ok

3. Expert says:

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

4. Expert says: