An electronics store has 4 branches in a large city. They are curious if sales in any particular department are different depending on location. They take a random sample of 4 purchases throughout the 4 branches - the results are recorded below. Run an independence test for the data below at the 0.05 level of significance.

Appliances

TV

Computers

Cell Phones

Branch 1

56

28

63

24

Branch 2

44

22

55

27

Branch 3

53

17

49

33

Branch 4

51

31

66

29

Enter the test statistic - round to 4 decimal places.

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