Instructors should assign this problem (about how temperature impacts mood) to students as in-class practice or homework after students have learned how to calculate a t-test for independent means and test for significance.
The activity leads students through determining the type of statistical analysis to use, the hypotheses, calculating the t-ratio and effect size (if appropriate), making a decision about the null hypothesis and summarizing the results. An answer key is included.
Please click here for the file.