Instructions
Time limit: 1 hour and 30 minutes
40 multiple¬choice questions
Open¬book/open¬notes
Results Displayed Submitted Answers
Question
2.5 out of 2.5 points
1 Imagine that the confidence interval around a group's mean is [980, 1160], what is the mean?
Question
2.5 out of 2.5 points
2 A negatively skewed distribution would most likely violate which assumption?
Question
0 out of 2.5 points
3 A researcher conducts a single¬sample t test and finds statistical significance at the 0.01 level.
Question
4 The formula “ ” is used to represent the:
Question
5 Cohen's d is one measure of:
Question
2.5 out of 2.5 points
2.5 out of 2.5 points
2.5 out of 2.5 points
6 The single¬sample t test compares a sample mean to a population mean when:
Question
2.5 out of 2.5 points
do we use to compare a sample to the population?
Question
2.5 out of 2.5 points
8 Why are effect sizes rather than test statistics used when comparing study results?
Question
9 What falls within the 95% confidence interval?
Question
2.5 out of 2.5 points
10 We calculate a statistical power and find that it is 0.93. This means that if the null hypothesis is , we have a % chance of rejecting the null hypothesis.
No comments