For Problem 5, how does the method of sampling affect the researcher?? ability to make inferences about the population? Problem 5 In a grocery store, customers who pass by are asked to sample three cheese spreads and to declare their preference for one. Their frequencies of choice are as follows: (a) Test the null hypothesis of equal preference using .05 and .01. What conclusions are allowable when X2 proves to be significant? (b) What is the effect size, ?for this result? (c) Is this a small, medium, or large effect?