In developing countries in Africa and the Americas, let p1

Chapter 7, Problem 7E

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QUESTION:

PROBLEM 7E

In developing countries in Africa and the Americas, let p1 and p2 be the respective proportions of women with nutritional anemia. Find an approximate 0% confidence interval for p1 − p2, given that a random sample of n1 = 2100 African women yielded y1 = 840 with nutritional anemia and a random sample of n2 = 1900 women from the Americas yielded y2 = 323 women with nutritional anemia.

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QUESTION:

PROBLEM 7E

In developing countries in Africa and the Americas, let p1 and p2 be the respective proportions of women with nutritional anemia. Find an approximate 0% confidence interval for p1 − p2, given that a random sample of n1 = 2100 African women yielded y1 = 840 with nutritional anemia and a random sample of n2 = 1900 women from the Americas yielded y2 = 323 women with nutritional anemia.

ANSWER:

Step 1 of 2

Given,

We have to determine the 90% confidence interval for

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