=+71. Online insurance. After seeing countless commercials claiming one can get cheaper car insurance from an online company, a local insurance agent was concerned that he might lose some customers. To investigate, he randomly selected profiles (type of car, coverage, driving record, etc.)

for 10 of his clients and checked online price quotes for their policies. The comparisons are shown in the table.

Local Online PriceDiff 568 391 177 872 602 270 451 488 -37 1229 903 326 605 677 -72 1021 1270 -249 783 703 80 844 789 55 907 1008 -101 712 702 10