The graph portrays the decision criterion for a hypothesis test for a population mean. The null hypothesis is HoHo. The curve is the normal curve for the test statistic under the assumption that the null hypothesis is true. Use the graph to solve the problem. db A graphical display of the decision criterion follows. Do not reject 1 Reject 1 1 1 1 1 10.007 Na 2.457 Determine the rejection region 2.457 All-scores that lie to the left of 2.457 0.007 O All-scores that lie to the right of 2.457