Question

For each of the following studies determine which t-test is the appropriate analysis (one sample, repeated measures, independent samples).

1. A researcher is examining whether a cognitive behavioral therapy has an effect on levels of anxiety. She records the level of anxiety in a group of patients prior to therapy, and again after the 8-week therapy.

2. A professor is interested in seeing whether or not his class is more neurotic than an estimated population mean. He records his class’s neuroticism score and compares it to an estimated population score for neuroticism.

Answer 1

professor is interested in seeing whether or not his class is more neurotic than an estimated population mean. He records his class’s neuroticism score and compares it to an estimated population score for neuroticism.

Here we will use one sample t test....as there is only on variable...

researcher is examining whether a cognitive behavioral therapy has an effect on levels of anxiety. She records the level of anxiety in a group of patients prior to therapy, and again after the 8-week therapy.

Here we will use two sample independent t test for comparing a group of patients prior to therapy and after 8 weeks...