Before the rush began for Christmas shopping, a department store had noted that

Question

Before the rush began for Christmas shopping, a department store had noted that the percentage of its customers who use the store's credit card, the percentage of those who use a major credit card, and the percentage of those who pay cash are the same. During the Christmas rush in a sample of 150 shoppers, 46 used the store's credit card: 43 used a major credit card; and 61 paid cash. With alpha = 0.05, the appropriate set of hypothesis to test if the methods of payment have changed during the Christmas rush is: H_0: p_1 = p_2 = p_3 H_1: p_1 notequalto p_2 notequalto p_3 H_0: The two variables are independent H_1: The two variables are not independent H_0: p_1 = p_2 = p_3 H_1: not all proportions are equal H_0: mu = 50 H_1: mu notequalto 50

Explanation / Answer

1. The thing we are going to test is wether all proportions are equal.
The alternative hypothesis is that if all proportionsa aren't equal

Answer is option C

Ho: p1=p2=p3
Ha: not all of them are equal.

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