Essay
A market research study was conducted to compare three different brands of car oil. The results of the study are summarized below. Use the accompanying statistical software output and 
= 0.005 to determine whether the brand of oil is independent of opinion. 
Chi-Square Test
Expected counts are printed below observed counts 
Chi-Sq = 11.015 + 0.091 + 12.878 + 3.295 + 0.048 + 2.336 + 4.429
+ 0.773 + 9.326 = 44.192
DF = 4, P-Value = 0.000
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The hypotheses to be tested are 
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