Homework SourseAccording to the Centers for Disease Control and Prevention
According to the Centers for Disease Control and Prevention, life expectancy at age 65 in America is about 18.7 years. Medical researchers have argued that while excessive drinking is detrimental to health, drinking a little alcohol every day, especially wine, may be associated with an increase in life expectancy. Others have also linked longevity with income and gender. The accompanying table shows a portion of data relating to the length of life after 65, average income (in $1,000s) at a retirement age of 65, a dummy variable Woman with 1 for women, and the average number of alcoholic drinks consumed per day. The entire data set, labeled Longevity, can be found on the text website.
Use the data to model life expectancy at 65 on the basis of Income, Woman, and Drinks. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)
Estimate the life expectancy at 65 of a man with an income of $40,000 and an alcoholic consumption of two drinks per day; repeat the prediction for a woman. (Round intermediate calculations to 4 decimal places and final answers to 2 decimal places.)
| According to the Centers for Disease Control and Prevention, life expectancy at age 65 in America is about 18.7 years. Medical researchers have argued that while excessive drinking is detrimental to health, drinking a little alcohol every day, especially wine, may be associated with an increase in life expectancy. Others have also linked longevity with income and gender. The accompanying table shows a portion of data relating to the length of life after 65, average income (in $1,000s) at a retirement age of 65, a dummy variable Woman with 1 for women, and the average number of alcoholic drinks consumed per day. The entire data set, labeled Longevity, can be found on the text website. |
Solution
a) y-hat = 17.65 +0.0228 Income + 3.202Woman -0.692Drinks.
b1)H0: 2 0; HA: 2 < 0
b2)Yes, since the relevant p-value is less than .
c)
