K The graph portrays the decision criterion for a one-mean z-test. The curve in the graph is the normal curve for the test statistic under the assumption that the null hypothesis is true. Use the O A. z=2.575 graph to solve the problem. A graphical display of the decision criterion follows. O B. z2 2.575 Do not reject Ho Reject Ho O C. ZS2.575 O D. z20.005 0.005 2 2575 Determine the rejection region