Solve these 1 through 4 questions please

1. To test the null hypothesis p = po with a single sample of size n, we require that n * po * (1 - Po) > 10. Our test statistic TS is P - Po po * (1-po) where p is the sample proportion. (b) For a left-tailed test, we may compute -Za = InvNorm(a, 0, 1) and check that the test-statistic falls in the tail. Or we may instead compute P = normalcdf (|TS| , +co, 0, 1), then check that P 0.45 ? ii. What would we conclude if we rejected the null hypothesis with a left-tailed test. iii. Can we reject the null hypothesis at level of significance a = 0.05, using a left-tailed test? iv. Can we reject the null hypothesis at level of significance a = 0.01, using a left-tailed test