4-17c(2). Accountants at the firm Walker and Walker believed that several traveling executives submit unusually high travel vouchers when they return from business trips. The accountants sook a sample of 200 voochers submitted from the past year; they then developed the following multiple regression equation relating expected travel cost
(Y)
to number of days on the road
(x_(1))
and distance traveled
(x_(2))
in miles:
hat(\gamma )=590 548.5x_(1) 5.40x_(2)
The coefficient of correlation computed was 0.68 . c(2). What percentage of variability in the cost of the trip is NOT explained by this model?
◻
.82 .46 .54 .23