Answer:
See below for answers.
Step-by-step explanation:
a) I'm getting on my TI-84 calculator -> y-hat=4.8722x-37.6767
b) The correlation coefficient would be r=0.94, which means there's a very strong positive linear correlation between the lengths and costs
c) The slope shows a positive trend since it's positive.
d) Using our linear regression equation from "A", we have y-hat=4.8722(20)-37.6767=59.7673, or about $59.77
e) Using our linear regression equation from "A", we have 147=4.8722x-37.6767, which when solved, x=37.9041706, or about 37.9 ft length
