1. You wish to test the following claim (Ha) at a significance level of =0.02 Ho:p1=p2 Ha:p1p2 You obtain 90 successes in a sample of size n1=602 from the first population. You obtain 126 successes in a sample of size n2=546from the second population.

Find critical value and test statistic to 3 decimals.

2. you wish to test the following claim (Ha) at a significance level of =0.005 Ho:p1p2 Ha:p1>p2 You obtain a sample from the first population with 432 successes and 290 failures. You obtain a sample from the second population with 376 successes and 283 failures. Find test statistic and pvalue to 3 decimals.