6. [-/1 Points] DETAILS MENDSTATC2 9.MC.022. MY NOTES ASK YOUR TEACHER In large-sample statistical tests about the population mean / , instead of using x directly as the test statistic, it is common practice to use: x -to if o is known a. O o/ Vn EN X - Ho i 4, if o is unknown b. O s/ Vn I - Ho if B is known c. O o/vn d. Oboth (a) and (b) e. Oneither (a) nor (b) Need Help? Read It 7. [-/1 Points] DETAILS MENDSTATC2 9.MC.032. MY NOTES ASK YOUR TEACHER If you wish to determine there is evidence that average starting salary for finance graduates exceeds $42,000, then you should formulate the null and alternative hypotheses such that: a. Oeither a two-tailed or one-tailed test could be used b. Oa two-tailed test should be used c. Oa one-tailed test should be used d. Othe probability of committing a Type II error is equal to 0.42 e. Oboth (b) and (d) Need Help? Read It 8. [-/1 Points] DETAILS MENDSTATC2 9.MC.031. MY NOTES ASK YOUR TEACHER In a hypothesis test involving the population mean, which of the following would be an acceptable formulation? a. OH: X = 100 vs. Ha: H # 100 b. OH: X = 100 vs. Ha: x 100 e. OH: X = 100 vs. Ha: x # 100 Need Help? Read It 9. [-/1 Points] DETAILS MENDSTATC2 9.MC.014. MY NOTES ASK YOUR TEACHER In testing the hypothesis Ho: M = 75 vs. Ha: M # 75, the following information is known: n = 64, x = 78, and o = 10. The test statistic is equal to: a. O-2.4 b. O+2.4 c. O-1.96 d. O+1.96 e. O+2.58 Need Help? Read It 10. [-/1 Points] DETAILS MENDSTATC2 9.MC.015. MY NOTES ASK YOUR TEACHER Which of the following p-values will lead us to reject the null hypothesis if the level of significance a = 0.05? a. Oo.25 b. Oo.05 c. Co.20 d. Oo.025 e. Oo.10