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Back to 8.2 A Single Population Mean Using the Student's t-Distribution

8.2 Exercise 1

Avg difficulty 2.5

Suppose you do a study of acupuncture to determine how effective it is in relieving pain. You measure sensory rates for 15 subjects with the results given. Use the sample data to construct a 95 percent confidence interval for the mean sensory rate for the population (assumed normal) from which you took the data.
The solution is shown step-by-step and by using the TI-83, 83+, or 84+ calculators.

  1. 8.6
  2. 9.4
  3. 7.9
  4. 6.8
  5. 8.3
  6. 7.3
  7. 9.2
  8. 9.6
  9. 8.7
  10. 11.4
  11. 10.3
  12. 5.4
  13. 8.1
  14. 5.5
  15. 6.9

OpenStax Statistics, 8.2 A Single Population Mean Using the Student's t-Distribution, exercise 1

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Adapted from Statistics © 2022 Rice University. Licensed under CC BY 4.0. Source: Statistics. Imported at revision 7dea80a.