Professors Who Teach Introductory Psychology Courses Often Hear Students Say

question 22

Essay

Professors who teach introductory psychology courses often hear students say that psychology is just "common sense." To test this assumption, Professor Empiricism administers a Fact or Fiction Survey at the beginning of the semester and then again at the end of the semester. She believes that after students are exposed to research-based evidence, students will score higher on the end-of-semester survey. Pre- and post-scores for a sample of her students are listed below:
a. Test the professor's hypothesis using a one-tailed, repeated measures t test with α = .05.
b. Calculate Cohen's d effect size and interpret the result.

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Definitions:

Direct Materials

The cost of raw materials that can be directly traced to the production process.

Materials Price Variance

The difference between the actual cost of materials used in production and the expected standard cost, which can indicate changes in material costs over time.

Particular Product

A specific item produced by a company, distinguished by its unique characteristics, as opposed to a general category of products.

Last Month

Refers to the period of time immediately preceding the current month.