A consumer advocacy group feels that Walmart provides a less safe shopping ...

  

A consumer advocacy group feels that Walmart provides a less safe shopping environment than Target. To try to prove their point, they randomly selected 24 Walmart stores and found the annual number of crime reports filed for these stores. Each of these Walmart stores was then paired with a Target store within a 10 mile radius, and the annual crime reports for the associated Target stores were also recorded. The data is shown below. Test to to see if the mean number of crime incidents at Walmart stores is significantly larger than the mean number of crime incidents at Target stores. Please note the data shown below is not real, but if you would like to see the real example, check out walmartcrimereport.com. Unfortunately, the real data was collected in a way that was not fair to Walmart. Assume normality.

Walmart,Target

713,767

459,547

874,889

861,906

398,363

949,996

776,740

581,455

633,656

864,927

816,885

427,399

882,852

806,810

1213,1170

793,848

727,682

1064,1071

701,660

826,787

534,496

922,930

572,520

918,863