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Showing of 13 Questions
No. & Date AskedQuestion
# 946 :: 4/29/12
Question 946 has been Answered
The management of a mine wishes to investigate the effect of a 4-day workweek on absenteeism. 2 random sample of size 40 were selected. Employees of G. . .

2-sample t-test

# 847 :: 3/5/10
Question 847 has been Answered
Grand Strand Family Medical Center is specifically set up to treat minor medical emergencies for visitors to the Myrtle Beach area. There are two fac. . .

2-sample t-test

# 834 :: 12/9/09
Question 834 has been Answered
You are interested in testing the hypothesis that men have greater levels of political participation than women, so you survey 332 men and 375 women . . .

2-sample t-test, Hypothesis Test

# 814 :: 10/4/09
Question 814 has been Answered
in a school how is ztest used in time table ... one group that studies 7 periods a day of 45 mins each class and the other group can choose semester w. . .

2-sample z-test, 2-sample t-test

# 796 :: 8/13/09
Question 796 has been Answered
Very happy Not happy at all Mean ideal number of children 3.32 2.07 Standard deviation . . .

2-sample t-test

# 786 :: 7/27/09
Question 786 has been Answered
From her firmís computer telephone log, an executive found that the mean length of 64 telephone calls during July was 4.48 minutes with a standard de. . .

2-sample t-test

# 751 :: 6/14/09
Question 751 has been Answered
The managers in a companyís East and West regions were rated on the basis of the companyís evaluation system. A researcher wishes to conduct a t-test . . .

2-sample t-test

# 555 :: 12/14/08
Question 555 has been Answered
Complete the following: a. Select a variable. Compare the mean of the variable for a sample of 30 for one group with the mean of the variable for a . . .

2-sample t-test, 2-proportion test, 2-sample z-test, z-test

# 542 :: 12/9/08
Question 542 has been Answered
A financial analyst wants to compare the turnover rates, I percent, for shares of oil-related stocks versus other stocks, such as GE and IBM. She sele. . .

2-sample t-test, Unequal Variances

# 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

# 416 :: 9/27/08
Question 416 has been Answered
Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a second group do not. After 6 months, both groups . . .

2-sample t-test, Hypothesis Test

# 410 :: 9/24/08
Question 410 has been Answered
You take a random sample of pizzas sold during a one hour period over the next week. Group 1 and Group 2 The results are shown in the table to the a. . .

2-sample t-test

# 149 :: 4/14/08
Question 149 has been Answered
You are interested in whether men participate more than women in political activities, so you survey 632 men and 675 women and ask them how many polit. . .

2-sample t-test, t-statistic, t-test