The number of auto accidents in Athens, Ohio, is related to the regional number of registered automobiles in thousands (X1), alcoholic beverage sales in $10,000s (X2), and rainfall in inches (X3). Furthermore, the regression formula has been calculated as:
Y = a + b1X1 + b2X2 + b3X3
where:
Y = number of automobile accidents
a = 7.5
b1 = 3.5
b2 = 4.5
b3 = 2.5
Calculate the expected number of automobile accidents under conditions a, b and c:
|
|
X1
|
X2
|
X3
|
|
(a)
|
2
|
3
|
0
|
|
(b)
|
3
|
5
|
1
|
|
(c)
|
4
|
7
|
2
|