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    Chi square test

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    A supermarket manager believes that among the customers buying orange juice, 30% of the customers prefer Brand A, 20% prefer Brand B, and 50% prefer Brand C. Records from sales in a typical week showed the number of orange juice bottles sold is given in the following table.

    Brand A
    Brand B
    Brand C
    Total

    225
    154
    421
    800

    At the level of significance 0.05, do these data support the Manager's belief?

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    https://brainmass.com/statistics/chi-squared-test/chi-square-test-136033

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    Step by step method for testing the hypothesis under 5 step approach is discussed here. Excel template for each problem is also included. This template can be used to obtain the answers of similar problems.

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