Assignment:
Construct a scatterplot, find the value of the linear correlation coefficient r, and find the critical values of r from Table A-6 using ?? =0 .05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables. (Save your work because the same data sets will be used in Section 10-3 exercises.)
Car Repair Costs Listed below are repair costs (in dollars) for cars crashed at 6 mi h in full-front crash tests and the same cars crashed at 6 mi h in full-rear crash tests (based on data from the Insurance Institute for Highway Safety). The cars are the Toyota Camry, Mazda 6, Volvo S40, Saturn Aura, Subaru Legacy, Hyundai Sonata, and Honda Accord. Is there sufficient evidence to conclude that there is a linear correlation between the repair costs from full front crashes and full-rear crashes?
|
Front
|
936
|
978
|
2252
|
1032
|
3911
|
4312
|
3469
|
|
Rear
|
1480
|
1202
|
802
|
3191
|
1122
|
739
|
2767
|