A research article reports that clients who received Intervention A had a 20% recidivism rate, while clients who received Intervention B had a 30% recidivism rate. What can be inferred from these statistics?
A) Intervention A is more effective than Intervention B.
B) The difference in recidivism rates may have been due to chance.
C) We risk a Type II error if we conclude that Intervention A is more effective than Intervention B.
D) We risk a Type I error if we conclude that the difference in recidivism rates may have been due to chance.

Question

A research article reports that clients who received Intervention A had a 20% recidivism rate, while clients who received Intervention B had a 30% recidivism rate. What can be inferred from these statistics?​
A) ​Intervention A is more effective than Intervention B.
B) ​The difference in recidivism rates may have been due to chance.
C) ​We risk a Type II error if we conclude that Intervention A is more effective than Intervention B.
D) ​We risk a Type I error if we conclude that the difference in recidivism rates may have been due to chance.

Quizplus · Accepted Answer

The difference in recidivism rates may have been due to chance because we do not know if the difference is statistically significant.

A Research Article Reports That Clients Who Received Intervention a Had