Arandom sample of 1000 registered voters in a certain county is selected, and each voter is categorized with respect to both educational level (four categories) and preferred candidate in an upcoming election for county supervisor (five possibilities). the hypothesis of interest is that educational level and preferred candidate are independent factors. (a) if χ2 = 7.2 what would you conclude at significance level 0.10? reject h0 fail to reject h0 (b) if there were only four candidates vying for election, what would you conclude if χ2 = 14.3 and α = 0.05? reject h0 fail to reject h0