Question 10 (1 point) A researcher reports that her obtained chi-square of -17.56 is significant because it exceeds the critical chi-square of -3.841 for an alpha of .05 with 2 degrees of freedom. What mistake has been made? Oneither critical nor obtained chi-squares can have negative values it is impossible to have only 2 degrees of freedom it is impossible for obtained chi-square to exceed 10 a one-tailed test should have been used