Question 9.182

76. Challenge Exercise. Refer to the previous exercise.

  1. Compare your conclusions from Exercises 75(b) and 75(c). Note that the conclusions differ, but the meanings of the hypotheses tested also differ. Combine the two conclusions into a single sentence. Do you find this sentence difficult to explain?
  2. Explain in your own words the difference between the hypotheses in Exercises 75(b) and 75(c). Also, explain how there could be evidence that the population mean heart rate is less than 78 but not different from 78.
  3. Assess the strength of the evidence against the null hypothesis for the hypothesis tests in Exercises 75(b) and 75(c).