Test the claim that the mean GPA of night students is larger than 2.84 at the 0.5% significance level.

  1. The null and alternative hypothesis would be:







  2. The test is:




  3. Based on a sample of n=35\displaystyle {n}={35} people, with sample mean GPA of x=2.916\displaystyle \overline{{x}}={2.916} and a sample standard deviation of s=0.103\displaystyle {s}={0.103}.
    2.722.772.792.82.8
    2.812.812.812.822.83
    2.832.852.852.882.88
    2.882.892.912.932.94
    2.942.952.962.972.98
    3.023.023.023.033.03
    3.043.053.073.073.1
    The p-value is: (to 4 decimals)

  4. Based on this we:

  5. State your conclusion in plain language. Include a sketch of your p-value, or submit the sketch to your instructor or test proctor.