Coke would like to perform a blind taste test between its cola and the cola produced by its biggest competitor, Pepsi. To conduct this test, 24 individuals were randomly selected and asked to taste the Coke product and rate it on a scale of 1– 10. Another 24 individuals were asked to taste and rate the Pepsi product on the same scale. The results are shown in the Excel file taste test variance.xlsx.
a. Using α = 0.05, determine if the variability in the ratings for the Pepsi product is greater than the variability in the ratings for the Coke product.
b. Verify your results using PHStat.
c. Interpret the p value obtained from the software.