Multiple Choice
An important reason for using random assignment in a study with independent groups is to
A) prevent any systematic differences between groups on extraneous variables.
B) be able to generalize to broader populations.
C) rule out competing interpretations of any differences we find.
D) a and c
Correct Answer:
Verified
Correct Answer:
Verified
Q2: When the assumption of homogeneity of variance
Q3: Which of the following is a reason
Q4: A researcher thinks that people who drive
Q5: The distribution of differences between means is<br>A)
Q6: A movie critic believes people linger in
Q8: The null hypothesis of an independent samples
Q9: p(10 ≤ (µ<sub>1</sub> - µ <sub>2</sub>) ≤
Q10: Given the following equation, the only difference
Q11: In the previous test on the treatment
Q12: Homogeneity of variance means that two samples