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Determining the confidence interval

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Reference no: EM131087333

Use the normal distribution to find a confidence interval for a difference in proportions p1 - p2 given the relevant sample results. Assume the results come from random samples.

A 90% confidence interval for p1 - p2 given counts of 148 yes out of 170 sampled for Group 1 and 12 yes out 110 sampled for Group 2.

Give the best estimate for p1 - p2, the margin of error, and the confidence interval.

best estimate = ?

margin of error = ?

confidence interval is ? to ?

Reference no: EM131087333

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