For Exercises 55–58, software output for confidence intervals for are provided. Assume the conditions are met. For each, examine the indicated software output, and do the following:

  1. Report the confidence interval in the form “(lower bound, upper bound).”
  2. Interpret the confidence interval.
  3. Calculate the margin of error for the confidence interval.
  4. Interpret the margin of error.

Question 8.233

56. Credit Card Purchases. Minitab results for a confidence interval for , the population proportion of clothing store purchases made with a credit card.

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