A researcher is interested consumer preferences among three brands of yogurt. A sample of 90 people is obtained, and each individual is asked to taste each brand and then select his/her favorite. The resulting frequency data are as follows:
Brand A 37 Brand B 21
Brand C 32
Calculate if the data indicate any significant preferences among the three brands at the .05 level of significance, and then identify which of the following statements is correct:
a. The null is rejected with a calculated chi square value of 5.21 and critical square value of 3.84.
b. The null is retained with a calculated chi square value of 4.47 and a critical chi square value of 5.99.
c. The null is retained with a calculated chi square value of 5.31 and a critical chi square value of 5.99.
d. The null is rejected with a calculated chi square value of 4.47 and a critical chi square value of 3.84.