Question
a line of regression y =-1.240 +7.07x is the best fit line for a set of data comparing airfare with 30 days notice and one-day notice. find the best-predicted cost of a ticket purchased one day in advance given that the cost of the ticket is $300 if purchased 30 days in advance of the flight.
a $475 b.$3361 c.$881 d.$133
a $475 b.$3361 c.$881 d.$133
Answers
oobleck
well, just plug in x=300 and calculate y.