City government has collected the following data on annual sales tax collections and new car registrations:
|
ANNUAL SALES TAX COLLECTIONS (IN MILLIONS)
|
1.0
|
1.4
|
1.9
|
2.0
|
1.8
|
2.1
|
2.3
|
|
NEW CAR REGISTRATIONS (IN THOUSANDS)
|
10
|
12
|
15
|
16
|
14
|
17
|
20
|
Determine the following:
a) The least-squares regression equation.
b) Using the results of part (a), find the estimated sales tax collections if new car registrations total 22,000.
c) The coefficients of correlation and determination.