Log-in | Contact Jeff | Email Updates

View Answered Questions

4 Questions returned
No. & Date AskedQuestion
# 541 :: 12/9/08
Question 541 has been Answered
A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6 percent with a standard deviation of . . .

F-test, Homogeneity of Variance, Unequal Variances, Levine test

# 527 :: 11/28/08
Question 527 has been Answered
A sample of 25 concession stand purchases at the October 22 matinee of Bride of Chucky showed a mean purchase of $5.29 with a standard deviation of $3. . .

Homogeneity of Variance, F-test, Levine test

# 526 :: 11/28/08
Question 526 has been Answered
To test the hypothesis that students who finish an exam first get better grades, Professor Hardtack kept track of the order in which papers were hande. . .

2-sample t-test, Homogeneity of Variance, Equal Variances, F-test, Levine test

# 344 :: 8/14/08
Question 344 has been Answered
Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using . . .

Standard Deviation, z-test, Normally Distributed, Homogeneity of Variance