For Exercises 23–35, do the following:

  1. Provide the null and alternative hypotheses.
  2. Describe the two ways a correct decision could be made in the context of the problem.
  3. Describe what a Type I error would mean in the context of the problem.
  4. Describe what a Type II error would mean in the context of the problem.

Question 9.23

23. Nurses' Study Times. The National Survey of Student Engagement reported that the mean number of hours spent studying per week for nursing majors is 18. A medical researcher is interested in investigating whether mean study time is greater than 18 hours per week.

9.1.23

(a) versus (b) Conclude that the population mean number of hours nursing majors study per week is greater than 18 hours when, in reality, it is greater than 18 hours. Conclude that the population mean number of hours nursing majors study per week is equal to 18 hours when, in reality, it is equal to 18 hours. (c) Conclude that the population mean number of hours nursing majors study per week is greater than 18 hours when, in reality, it is equal to 18 hours. (d) Conclude that the population mean number of hours nursing majors study per week is equal to 18 hours when, in reality, it is greater than 18 hours.