For Exercises 47–50, do the following:

  1. Find .
  2. Determine whether the conditions are met for constructing a confidence interval for .
  3. If the conditions are met, construct and interpret a confidence interval for with the indicated confidence level, and sketch the confidence interval on the number line. If the conditions are not met, state why not.

Question 8.225

48. Rather Be Fishing? A study found that Minnesota, at 38%, leads the nation in the proportion of people who go fishing.17 Assume that the study sample size was 100 and use a 90% confidence level.