The projections of male life expectancy at age 65 in the United States are summarized in the following table. (Here, x = 0 corresponds to the beginning of 2000.)
Find the equation of the least-squares line for these data. Use the equation found to estimate the life expectancy at 65 of a male in 2050.
A) y = 0.09x + 16; 20 years
B) y = 0.3x + 10.38; 90 years
C) y = 0.21x + 10.02; 86 years
D) y = 0.3x + 10.38; 25 years

Question

The projections of male life expectancy at age 65 in the United States are summarized in the following table.  (Here, x = 0 corresponds to the beginning of 2000.)
Find the equation of the least-squares line for these data. Use the equation found to estimate the life expectancy at 65 of a male in 2050.
A) y = 0.09x + 16; 20 years 
B) y = 0.3x + 10.38; 90 years 
C) y = 0.21x + 10.02; 86 years 
D) y = 0.3x + 10.38; 25 years

Quizplus · Accepted Answer

The Answer of The projections of male life expectancy at age 65 in the United States are summarized in the following table.  (Here, x = 0 corresponds to the beginning of 2000.)
Find the equation of the least-squares line for these data. Use the equation found to estimate the life expectancy at 65 of a male in 2050.
A) y = 0.09x + 16; 20 years 
B) y = 0.3x + 10.38; 90 years 
C) y = 0.21x + 10.02; 86 years 
D) y = 0.3x + 10.38; 25 years

The Projections of Male Life Expectancy at Age 65 in the United