Testing claim that opinion is independent of brand

Reference no: EM1318535

Q1) Market research study was performed to compare 3 different brands of antiperspirant. Results of study are summarized below. Use a 5% level of significance and test claim that opinion is independent of brand.

	Brand
Opinion	A	B	C	Total
Excellent	29	37	50	116
Satisfactory	83	65	83	231
Unsatisfactory	18	9	6	33
Total	130	111	139	380

1) What is the value of the sample test statistic?

i) x²=19.00

ii) x²=9.49

iii) F = 0.10

iv) x²=11.91

2) What is your conclusion?

i) Opinion and Brand are independent

ii) Opinion and Brand are not independent

ii) Cannot determine

Reference no: EM1318535

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