For Exercises 15–26, do the following:

  1. State the hypotheses and the rejection rule using the -value method.
  2. Calculate the test statistic .
  3. Find the -value. (Use technology or estimate the -value.)
  4. State the conclusion and the interpretation.

Question 9.222

26. A random sample of size 16 from a normal population yields and . Researchers are interested in finding whether the population mean differs from 2.0, using level of significance .