STA 3024 Exam 1 Sample Questions

106. A chi-squared test for a contingency table with three rows and four columns yields a p-value of0.099. Using α = 0.05, which of the following is true?(A) We reject H 0 .(B) We conclude that it is reasonable that the variables are independent.(C) both (A) and (B)(D) neither (A) nor (B)107. Assuming that both were constructed from random samples, for which of the following twocontingency tables would it be okay to perform a chi-squared test?ResponseGroup Yes No TotalGroup I 10 4 14Group II 5 11 16Total 15 15 30ResponseGroup Yes No TotalGroup I 8 2 10Group II 3 17 20Total 11 19 30(A) the table on the left(B) the table on the right(C) both (A) and (B)(D) neither (A) nor (B)108. Which of the following data sets would be most immediately suitable for representation as acontingency table?(A)Subject # Age Hair color1 22 Black2 35 Red3 26 Brown(B)Subject # Eye color Hair color1 Brown Black2 Green Red3 Brown Brown. . .n 23 Blonde...n Blue Blonde(C)Subject # Age Income1 22 $37,0002 35 $56,0003 26 $7,300(D)Subject # Eye color Income1 Brown $37,0002 Green $56,0003 Brown $7,300. . .n 23 $10,000.. .n Blue $10,000