A Clinical Psychologist Is Interested in Comparing the Effectiveness of Short

question 184

Multiple Choice

A clinical psychologist is interested in comparing the effectiveness of short term relaxation and cognitive-behavioral therapy in treating mild depression. An experiment is conducted in which 15 patients with mild depression are randomly selected and assigned 5 each to a relaxation therapy group, a cognitive/behavioral therapy group, and an attention placebo group. Therapy is administered until the patient is judged no longer depressed or until 10 treatment sessions have elapsed. The following data is obtained. Scores are the number of sessions for each patient. Using a = 0.05, F _crit = _________.

• A) 3.98
• B) 19.41
• C) 6.93
• D) 3.88

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Definitions:

Confidence Interval Estimate

Confidence Interval Estimate is an estimation method that calculates a range of possible values for an unknown population parameter, based on sample data and a specified confidence level.

Population Proportions

It denotes the fraction or percentage of a population having a particular property or attribute.

Sample Proportions

Measures that represent the fraction of the sample that exhibits a particular attribute or characteristic.

Population Proportions

Fractions or percentages of a population that fall into various categories, often used in polling and survey results.