A study is done by a community group in two neighboring colleges to determine whether graduates students from college A are taken more math classes than graduates students from college B. Suppose a random sample of 11 graduate students was selected from college A and another random sample of 9 graduate students from college B was selected. The following sample results were observed: College A College B x] = 4.0 classes x2 = 3.5 classes $1 = 1.5 classes $2 = 1.0 class If the pooled standard deviation is 1.30, conduct a hypothesis test with a significance level of 0.25 and write an appropriate conclusion. Oa. There is no sufficient evidence to conclude that a student who graduates from college A has taken more math classes, on the average, than a student who graduates from college B. Ob. There is sufficient evidence to conclude that a student who graduates from college A has taken more math classes, on the average, than a student who graduates from college B. c. do not reject Ho d. non of them