A marketing agency reported the following market share percentages for last year's top selling brands of yogurt: Brand A - 28%; Brand B - 21%; Brand C - 18%; Brand D - 12%; Other - 21%. Since some companies have recently enhanced their products, the agency conducted a survey to determine if the yogurt preferences reported this year match last year's market shares. The distribution of yogurt preferences for the 240 participants of the current study were as follows: Brand A - 60; Brand B - 77; Brand C - 48; Brand D - 26, and Other - 29. Conduct a chi-square goodness of fit test for known proportions using α = .05.

Question

Quizplus · Accepted Answer

The Answer of A marketing agency reported the following market share percentages for last year's top selling brands of yogurt: Brand A - 28%; Brand B - 21%; Brand C - 18%; Brand D - 12%; Other - 21%. Since some companies have recently enhanced their products, the agency conducted a survey to determine if the yogurt preferences reported this year match last year's market shares. The distribution of yogurt preferences for the 240 participants of the current study were as follows: Brand A - 60; Brand B - 77; Brand C - 48; Brand D - 26, and Other - 29. Conduct a chi-square goodness of fit test for known proportions using α = .05.

A Marketing Agency Reported the Following Market Share Percentages for Last