Statistics

An industrial psychologist has a stress test that is used to determine the amount of stress that managers are under. A value of 80 or higher indicates “high stress.” The industrial psychologist believes that the managers at a large, profitable pharmaceutical firm are not under “high stress” and that the average stress index is less than 80 for managers of the company. A random sample of 50 managers is selected, and their stress index was recorded. Assume that the population standard deviation is 10.15. See the file “Stress Index for Managers”

asked by Anshul
  1. If you perform a statistical test, try a one-sample z-test.

    z = (sample mean - population mean)/(standard deviation divided by the square root of the sample size)

    Population mean = 80
    Sample mean = ? (I don't see one listed)
    Standard deviation = 10.15
    Sample size = 50

    Once you have the z-test statistic, you can go from there to test your hypothesis.

    I hope this helps.

    posted by MathGuru

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Supportive Learning Environment

    Which of the following statements is true about stress in young children? A. Children who experience high stress in the early childhood years develop coping skills that result in a higher threshold to stress in later years. B.
  2. cjs 210

    CheckPoint: Police Stress Write a 350- to 700-word response describing each of the four categories of stress associated with the policing profession. Within each response, describe how this type of stress affects the officer’s
  3. statistics

    In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below. Number of Cups of Coffee Stress Level 3 5 2 3 4 3 6 9 5 4 1
  4. soil mechanics

    The following results were obtained from a CU on two samples: Test no. Confining stress (kPa) Deviatoric stress (kPa) Pore pressure (kPa) 1 100 400 -20 2 300 760 60 a) Determine c and ƒÖ for total stress and effective stress
  5. Physics

    Which one of the following stresses would be most likely to cause a bone to fracture? A) tensile stress B) compressive stress C) sheer stress D) bulk stress
  6. psychology

    An industrial/organizational psychologist's job would involve using psychological concepts to create better relationships between employees and managers. False True True?
  7. Statistics

    In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1 to 10. The date follow: Number of Cups of Coffee 3,2,4,6,5,1,7,3 Stress Level
  8. Stats

    1. In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below. Number of Cups of Coffee Stress Level 3 5 2 3 4 3 6 9 5 4
  9. Health

    Which of the following statements is true? Stress management consists of finding balance and developing coping strategies. The goal of stress management is to eliminate all sources of stress. The goal of stress management is to
  10. Stress

    I'm having a tough time brainstorming ideas about the four stress factors. I have to know why it's important for people to learn to deal with stress. Then I need to describe social, mental, emotional, and physical stress factors

More Similar Questions