Review Test Submission: [u05q1] Week 5 Quiz 1
|Course||PSY7864 – Jan 11 2021 to Mar 19 2021 – Section 01|
|Test||[u05q1] Week 5 Quiz 1|
|Attempt Score||100 out of 100 points|
|Results Displayed||All Answers, Submitted Answers, Feedback, Incorrectly Answered Questions|
Question 1You conduct an experiment to see if using a new course format has an impact on learner performance. One group of learners took the course in the old format and another took it in the new format and then their grades were compared. What type of t-test should be used for this analysis?
Selected Answer:Independent samples t-test Answers: Response Feedback:Correct.
Question 2The null hypothesis for this study would be that course format has no impact on learner performance. The alternate hypothesis is that learners in the new course format will have higher performance than those in the old format. If your analysis results are t (49) = 3.61, p = .06 and the mean of the learners in the new course format was 94 and the mean of the learners in the old class format was 87, what would your conclusion be?
Selected Answer:Accept the null hypothesis. There were no significant differences detected between the two groups. Answers: Response Feedback:Correct.
Question 3The university is interested in seeing how much knowledge of statistics is gained in an introductory course. They collect data with a survey of general statistical knowledge before and after the class. What type of t-test should be used to see the impact of the class on learner knowledge?
Selected Answer:Paired samples t-test Answers: Response Feedback:Correct.
Question 4If you conduct a single sample t-test for a group of 50 learners how many degrees of freedom will you have?
Selected Answer:49 Answers: Response Feedback:Correct.
Question 5Levene’s test is use to test the assumption that both groups have roughly equal variances on the dependent variable (grades). If the result of Levene’s test is significant ( F = 36.54, p = .043) what should you do?
Selected Answer:Interpret the data in the row labeled “Equal variances not assumed.” Answers: Response Feedback:Correct.