x1 = 10, n1 = 20, x2 = 18, n2 = 30; 80% confidence interval a. Use
Question:
a. Use the two-proportions plus-four z-interval procedure as discussed on page 467 to find the required confidence interval for the difference between the two population proportions.
b. Compare your result with the corresponding confidence interval found in parts (d) of Exercises 11.82–11.87, if finding such a confidence interval was appropriate.
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a 10 1 20 2 0500 and 18 1 30 2 0594 The 80 twoproportion pl...View the full answer
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