A company that produces snacks performs tase testing to see how consumers react. Horseradish cheddar chips has strong taste. A standard product Tortilla chips receives more consistent ratings. They were rated from 1 to 10. The mean and standard deviation for each product is presented below.

Horseradish Chedder Chips Tortilla Chips

4 8

10 8

10 7

3 8

10 8

9 10

10 7

mean 8.0 8.0

Standard

deviation 3.11 1.00

Each product has the same mean, the Horseradesh Chedder Chips are viewed more positively due to a higher standard deviation.

a) Using alpha= 0.05, determine if the horseradish chedder chips has a higher variance than the tortilla chips. Show calculations. See formulas on page 628

b) Interpret the p-value using Excel. See page 629