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Market researchers know that background music can influence the mood and purchasing behavior of customers. One study in a super market compared three treatments: no music, French accordion music and Italian string music. Under each condition, the researchers recorded the numbers of bottles of French and other wine purchased. Here is the table that summarizes the data:
The team wants to determine if there is a difference in proportions of French wine purchased under the influence of different types of music (at significance level of 0.05). You are a member of that research team and you are required to answer the following questions:1. State the hypothesis2. Select the correct formula to calculate the overall proportion (P bar) of the groups and also calculate it3. After calculating the expected frequencies, calculate the Chi square statistic which is equal to:4. Using the Chi Square table, determine the critical value5. Based on your answers in 3 and 4 what is your decision and what is your managerial statement?
Image text transcribed for accessibility: X1/n1+X2/n2+x3/n3= X1+X2+X3/n1+n2+n3= p1+p2+p3/n1+n2+n3 =
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