Examine the possible linear relationship between the weekly hours of use (x) for a certain type of machine and the annual maintenance cost (y) in dollars. The sample of size ten has: X-bar = 25.3 ,...

Examine the possible linear relationship
between the weekly hours of use (x) for
a certain type of machine and the annual
maintenance cost (y) in dollars. The
sample of size ten has: X-bar = 25.3 ,
SXX = 946.1 , SSR = 860.1 , SSE = 144.5 ,
b0 = 10.53 , b1 = 0.95 , and sb1 = 0.138.

a) Write the estimated SLR equation.
b) Find SST.
c) Find and interpret the coefficient of
determination value.
d) Conduct the SLR model utility test.
Use p-value = 0.0001.
e) If the company expects to use a new
machine of this type 30 hours per
week, what is the predicted annual
maintenance cost?
f) Find and interpret the 95% PI for
the situation in part (e).