Log-in | Contact Jeff | Email Updates

View Answered Questions

Showing of 14 Questions
No. & Date AskedQuestion
# 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

# 833 :: 12/9/09
Question 833 has been Answered
suppose that the census indicates the average American earns $36,345.45 per year. You are interested in the whether people who majored in political s. . .

Hypothesis Test, 1-sample t-test

# 730 :: 5/23/09
Question 730 has been Answered
Describe the steps in formal hypothesis testing. Make at least one comment for each step.. . .

Steps in Hypothesis Test, Hypothesis Test

# 672 :: 4/13/09
Question 672 has been Answered
In Meijer supermarket, the customer's waiting time to check out is approximately normally distributed with a standard deviation of 2.5 minutes. A samp. . .

Hypothesis Test

# 669 :: 4/13/09
Question 669 has been Answered
You have failed to reject the null hypothesis when it is false, and therefore you have made a A) Type A correct decision. B) Type B corr. . .

Type I Error, Type II Error, Hypothesis Test

# 667 :: 4/11/09
Question 667 has been Answered
If the p-value is greater than the level of significance α , then the decision must be to reject Ho. A) True B) False. . .

p-value, Hypothesis Test

# 576 :: 1/16/09
Question 576 has been Answered
TRUE or FALSE The level of significance is the probability that a true hypothesis is rejected. A Type one error is also referred to as an alpha r. . .

Hypothesis Test, Alternative Hypothesis , Alpha, Null Hypothesis

# 564 :: 12/19/08
Question 564 has been Answered
For each of the following situations, indicate whether an error has occurred and, if so, indicate what kind of error (Type I or Type II) has occurred.. . .

Type I Error, Type II Error, Power, Hypothesis 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

# 345 :: 8/14/08
Question 345 has been Answered
What are the 5 steps involved in hypothesis testing using the traditional/classical method; Can you use a simple real world example to explain it to m. . .

Null Hypothesis , Alternative Hypothesis , Hypothesis Test, Steps in Hypothesis Test

# 261 :: 7/1/08
Question 261 has been Answered
If your hypothesis is not correct, can the data collected still be used within a subsequent analysis.. . .

Hypothesis Test, p-value

# 218 :: 6/5/08
Question 218 has been Answered
what are the key terms in a verbal hypothesis that signify whether you are conducting a one-tailed or two-test? Give an example and explain your answe. . .

Hypothesis Test, One-Tailed Area

# 208 :: 5/27/08
Question 208 has been Answered
I am comparing 2 proportions of patients (before and after the introduction of a new quality-of-care project). The project is expected to reduce the p. . .

1-Sided Test, Hypothesis Test

# 182 :: 5/5/08
Question 182 has been Answered
When would you use a hypothesis test for the difference in two population proportions at your place of employment, in your education, or in politics?. . .

Hypothesis Test, Two-Proportion Test