Use the normal distribution to find a confidence interval for a difference in proportions P 1 - P 2 given the relevant sample results. Assume the results come from random samples.

A 90% confidence interval for P 1 - P2 given counts of 82 yes out of 190 sampled for Group 1 and 60 yes out 150 sampled for Group 2

Give the best estimate for P 1 - P 2, the margin of error, and the confidence interval.

Round your answers to three decimal places.

Best estimate:

Margin of error:

Confidence interval:

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