Five Brands of Orange Juice Are Displayed Side by Side

Essay

Five brands of orange juice are displayed side by side in several supermarkets in a large city. It was noted that in one day, 180 customers purchased orange juice. Of these, 30 picked Brand A, 40 picked Brand B, 25 picked Brand C, 35 picked Brand D, and 50 picked brand
E.In this city, can you conclude at the 5% significance level that there is a preferred brand of orange juice?