Answer Happy

Below are the average heights for American boys in 1990.
Part 1.
Calculate the least squares line. Put the equation in the form
of: ŷ = a + bx. (Round your answers
to three decimal places.)
ŷ = ____+____ x
Part 2.
Find the correlation coefficient r. (Round your
answer to four decimal places.)
r =
Part 3.
Find the estimated average height for a one-year-old. (Use your
equation from part (d). Round your answer to one decimal
place.)
____cm

Find the estimated average height for a thirteen-year-old.
(Use your equation from part (1). Round your answer to two decimal
places.)
____cm
Part 4.
Use the least squares line to estimate the average height for
a fifty-six-year-old man. (Use your equation from part (1).
Round your answer to one decimal place.)
____ cm
Part 5.
What is the slope of the least squares (best-fit) line? (Round
your answer to three decimal places.)
____
Interpret the slope. (Round your answer to three decimal
places.)
As age increases by one year, the average height
increases by _____ centimeters.