Find the P-value for a left-tailed hypothesis test with a test statistic of z = - 1.28. Decide whether to reject Ho if the level of significance is a = 0.05.Find the critical value(s) for a left-tailed z-test with a = 0.10. Include a graph with your answer.Find the critical value(s) and rejection region(s) for the type of z-test with level of significance o. Include a graph with your answer. Right-tailed test, a = 0.02Find the critical value(s) and rejection region(s) for the type of z-test with level of significance <. include a graph with your answer. two-tailed test>