For Exercises 47–50, software output from a test for is provided. For each, examine the indicated software output, and provide the following steps for level of significance :

  • Step 1 State the hypotheses and the rejection rule.
  • Step 2 Find .
  • Step 3 Find the -value.
  • Step 4 State the conclusion and interpretation.

Question 9.153

47.

image

9.3.47

Step 1

We will reject if the .

Step 2

Step 3

Step 4 The is not . Therefore we do not reject . There is insufficient evidence at level of significance that the population mean is less than 75.