For Exercises 7–20, do the following:

  1. Find .
  2. Determine whether the conditions for constructing a confidence interval for are met.
  3. If the conditions are met, construct a confidence interval for with the indicated confidence level.
  4. If the conditions are met, sketch the confidence interval using a graph similar to Figure 27 on page 465.

Question 8.193

16. Confidence level 90%, ,