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A company wants to determine if customers have a preference for any of the following four brand of tea: A, B, C and D. From
A company wants to determine if customers have a preference for any of the following four brand of tea: A, B, C and D. From a random sample of 300 customers, it was found that 67 preferred A, 78 preferred B, 85 preferred C, and the remainder preferred D. Test the null hypothesis that customers have no preference for any of the four brands of tea.
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