Randy Wants to See Whether Intervention a Is More Effective

question 14

Multiple Choice

Randy wants to see whether Intervention A is more effective than Intervention B in improving self-esteem scores.Randy conducts an experiment to see if recipients of Intervention A improve more in self-esteem from pretest to posttest than recipients of Intervention B, using the .05 level of significance.Randy conducts two paired-sample t-Tests and finds a p value of .04 for Intervention A's improvement and a p value of .06 for Intervention B's improvement.Randy then conducts an independent-samples t-Test of the posttest scores and finds a p value of .55.Which of the following statements is an appropriate conclusion from Randy's findings?

• A)Intervention A is more effective than Intervention B in improving self-esteem scores.
• B)Both interventions are effective in improving self-esteem scores, but Intervention A is more effective.
• C)Both interventions are equally effective in improving self-esteem scores.
• D)We cannot conclude that either intervention is effective in improving self-esteem scores.

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Definitions:

Prison Populations

The group of individuals who are incarcerated within a correctional facility at any given time.

General Population

The total group of individuals in a specific geographic area or from whom data can be collected.

Clear And Convincing Proof

A standard of evidence requiring a high degree of certainty to persuade that a proposition is significantly more likely to be true than not.

Total Certainty

The absolute assurance or conviction about the truth or accuracy of something.