Several types of yogurt are sold in a small general store in New England. From a past study of customer selections, the owner knows that 20% of the customers ordered flavor A, 35%, flavor B, 18%, flavor C, 12%, flavor D, and the remainder, flavor E. Now the owner, who thinks that the customer preferences have changed, randomly samples 80 customers and finds that 12 prefer A, 16 prefer B, 30 prefer C, 7 prefer E, and the remainder prefer D. Determine if the customers' preferences have changed from the last study.
Answer to relevant QuestionsTwo years ago the manager of a local supermarket that sells three national brands (brands A, B, and C) and one store brand (brand D) of orange juice found that brands A and C were equally preferred, 33% preferred brand B, ...Of a random sample of 100 college students, 35 expected to achieve a higher standard of living than their parents, 43 expected a lower standard of living, and 22 expected about the same standard of living as their parents. ...Given the following analysis of variance table, compute mean squares for between groups and within groups. Compute the F ratio and test the hypothesis that the group means are equal. Consider a problem with four subgroups with the sum of ranks in each of the subgroups equal to 71, 88, 82, and 79 and with subgroup sizes equal to 5, 6, 6, and 7. Complete the Kruskal-Wallis test and test the null hypothesis ...Based on the data of Exercise 15.11, perform the Kruskal Wallis test of the null hypothesis of equal population mean scores on the CPA exam for students using no tutoring services and using services A and B. In exercise
Post your question