6. The ABC company wants to purchase potato chips for the store, so nine people were asked to indicate their preference for plain over sour cream. The following data showed their preferences. Respondents 1 Plain vs. Sour Cream + 2 + 3 4 + LO 5 + 6 + 7 - 8 9 With a 0.10, test for a significant difference in the preferences for chips. A "+" indicates a preference for plain chips.