A sample of pulse rates of men and women are used to construct a 95% confidence

Question

A sample of pulse rates of men and women are used to construct a 95% confidence interval for the difference between the two population means, and the result is

12.2 < 12 < 1.6, where pulse rates of men correspond to population 1 and pulse rates of women correspond to population 2. Express the confidence interval with pulse rates of women being population 1 and pulse rates of men being population 2.

Choose the correct answer:

A.1.6 < 12 < 12.2

B.12.2 < 12 < 1.6

C. 12.2 < 12 < 1.6

D. 1.6 < 12 < 12.2

Explanation / Answer

When we change Population 1 to population 2 and vice varsa then confidence interval changes in opposite direction with exactly opposite sign to lower and upper bound. Here answer is :

D. 1.6 < 12 < 12.2

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