Data from the World Health Organization in 2013 Were Used

question 25

Multiple Choice

Data from the World Health Organization in 2013 were used to predict the life expectancy for men in a country from the life expectancy of women in the country.The resulting regression equation was Ŷ = 3.73 + 0.88(X) .Using the regression equation, what would be the predicted life expectancy of men in a country in which the life expectancy for women is 70 years?

• A) 57.87 years
• B) 60.93 years
• C) 65.33 years
• D) 69.61 years

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Definitions:

Pooled Variance

A method used to estimate the variance of two or more different samples that assume the underlying population variances are equal.

Sample Variances

A measure of variance calculated from a sample of a population, used to estimate the variance of the entire population.

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