Question

I need help with - ​(b) Determine the​ least-squares regression equation from the sample data - Thank you!

A doctor wanted to determine whether there is a relation between a​ male's age and his HDL​ (so-called good) cholesterol. The doctor randomly selected 17 of his patients and determined their HDL cholesterol. The data obtained by the doctor is the in the data table below.

Age_-_x   HDL_Cholesterol_-_y
39   59
43   55
47   36
32   57
56   33
53   40
59   40
61   38
28   45
37   46
67   64
30   52
52   34
29   46
54   37
49   55
41   29

​(a) Draw a scatter diagram of the​ data, treating age as the explanatory variable. What type of​ relation, if​ any, appears to exist between age and HDL​ cholesterol?

A. The relation appears to be linear.

B. The relation appears to be nonlinear.

C. There does not appear to be a relation. - correct answer

​(b) Determine the​ least-squares regression equation from the sample data.

ŷ=__?__ x+__?__ ​

(Round to three decimal places as​ needed.)

Answer 1