An electronics store has 4 branches in a large city. They are curious if sales in...

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Basic Math

An electronics store has 4 branches in a large city. They arecurious if sales in any particular department are differentdepending on location. They take a random sample of purchasesthroughout the 4 branches â€“ the results are recorded below. Run anindependence test for the data below at the 0.05 level ofsignificance.
Appliances
TV
Computers
Cameras
Cell Phones
Branch 1
54
28
61
24
81
Branch 2
44
21
55
23
92
Branch 3
49
18
49
30
72
Branch 4
51
29
65
29
102
What is the Test statistic (?2) and how is it done in excel?

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The hypothesis being tested is H0 Sales and location are independent Ha Sales and location are not independent The output is Col 1 Col 2 Col 3 Col 4 Col 5 Total Row 1 Observed 54 28 61 24 81 248 Expected 5026 2437 5838 2691 8808 24800 O E 374 363 262 291 708 000 O E E 028 054 See Answer

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	Appliances	TV	Computers	Cameras	Cell Phones
Branch 1	54	28	61	24	81
Branch 2	44	21	55	23	92
Branch 3	49	18	49	30	72
Branch 4	51	29	65	29	102