4. A sample of 2000 numbers is selected randomly out of which 960 were odd numbers. a. State the hypotheses to determine whether the proportion of odd numbers is significantly different from 50%. b. Compute the test statistic. With level of significance a = 0.1, using the p-value approach test the hypotheses and state the conclusion. d. Use the critical value approach (a = 0.1), test the hypotheses and state the conclusion