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:

Hypospadias

a birth defect in males in which the opening of the urethra is not located at the tip of the penis.

Epispadias

A rare congenital defect in which the opening of the urethra is on the upper (dorsal) side of the penis, in males, or in an abnormal position in females.

Hydrocele

A fluid-filled sac around a testicle, often first noticed as swelling of the scrotum.

Ductus Deferens

A tubular structure that transports sperm from the testicles to the urethra.