.7. An employment information service claims the mean annual pay for full-time female workers over age 25 and without a high school diploma is $19,100. The annual pay for a random sample of 12 full-time female workers without a high school diploma is listed. 18794 18803 19864 18165 16012 19177 19143 17328 21445 20354 18316 19237 At 10% level of significance, a researcher tested the claim that the mean salary is $ 19100. The value of the standardized test statistic is (2 Points) A) Z = 1.451 B) t = 1.451 C) Z=-0.538 D) t = -0.538