In Section 6.3, Exercises 27 and 28, let p₁ be the proportion of the population of U.S. college graduates who expect to stay at their first employer for 3 or more years and let p₂ be the proportion of the population of U.S. college graduates who are employed in their field of study. Construct a 95% confidence interval for p₁ - p₂. Compare your result with the result in Section 6.3, Exercise 27, part (a).

You can construct a confidence interval for the difference between two population proportions p₁ - p₂ by using the inequality below.

Construct the indicated confidence interval for p₁ - p₂. Assume the samples are random and independent.

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(Pi – P2) < Pi – P2 < (pi – P2) + za П1 П2 П2