Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is ud = 0. Compute the value of the t test statistic. Round intermediate calculations to four decimal places as needed and final answers to three decimal places as needed. 20) x 7 7 11 6 12 y 4 9 7 7 7 20) A) t= 0.578 B) t = 2.890 C) t = 1.292 D) t = 0.415