Studying Time for Biologists and Psychologists. Use the following information for Exercises 44–47: The National Survey of Student Engagement reported in 2012 that the mean number of hours spent studying per week for biology majors was 16.7, whereas the mean for psychology majors was 13.9. Assume that these are sample means from sample sizes of 100, and that the sample standard deviations were each 5 hours.
47. Test, using level of significance , whether the population mean studying times are equal. Does your conclusion agree with that in Exercise 46?
10.2.47
. Reject if the . . (TI-84: 0.0001045746); The is , so we reject . There is evidence at level of significance that the population mean study time of biology majors differs from that of psychology majors. Yes.