Quiz 11 - Question 1 5 out of 5 points When F is...

Question 1
5 out of 5 points
When F is significant:
Selected Answer:
one does not know which specific means differ significantly.
Answers:
the values of the means that are closest together are the only ones that are
significant.
the values of the means that are farthest apart are the only ones that are significant.
one does not know which specific means differ significantly.
one fails to reject the null hypothesis.
Question 2
5 out of 5 points
If the p level is.0.05 and the null hypothesis is true, the probability of making a Type
I error when performing a single hypothesis test is _____, but if three hypothesis tests
are performed, then the probability of NOT making a Type I error is _____, which
means that the probability of making a Type I error at least once in these three
hypothesis tests is _____.
Question 3
5 out of 5 points
Violation of the assumption that samples are randomly selected affects researchers'
ability to:
Question 4
5 out of 5 points
A one-way within-groups ANOVA is also known as a _____ ANOVA.

Question 5
5 out of 5 points
Dr. Sanders was interested in investigating the effects of stress on memory. He
exposed participants to public-speaking stress and room-temperature stress and
gave them a memory measure immediately after exposure to the two stressors. Dr.
Sanders also gave participants the memory measure at baseline, when they first
entered the research laboratory. Dr. Sanders hypothesized that participants'
memories would be most affected by the two stressors compared to the baseline
condition. What statistical test should Dr. Sanders use to test her hypothesis?
Selected Answer:
within-groups ANOVA
Answers:
between-groups ANOVA
independent samples t test
within-groups ANOVA
dependent samples t test
Question 6
5 out of 5 points
An F statistic calculated on 3 and 48 degrees of freedom equals 4.23. Which decision
should be made about a hypothesis tested at the p = 0.05 level?