Multiple Choice
An experiment is conducted to test the effectiveness of a social work intervention.The experimental group improves more than does the control group,but the results are not statistically significant.This means that
A) the intervention was not effective.
B) the intervention was effective, but not at a significant level.
C) we cannot rule out sampling error in inferring about the effectiveness of the intervention.
D) the sample size was too large.
Correct Answer:

Verified
Correct Answer:
Verified
Q1: The probability of a Type II error
Q2: Ignoring statistical power can result in<br>A) conducting
Q4: Describe the controversy regarding statistical significance testing
Q5: If two correlated variables each have a
Q6: Two different studies assessing the effectiveness of
Q7: Chi-square should be used to test the
Q8: Statistical power increases when<br>A) larger sample sizes
Q9: Nonparametric tests are intended for use when
Q10: Multiple regression analysis shows the overall correlation
Q11: Parametric tests assume<br>A) interval- or ratio-level measurement