Can you answer me this questions please

You may use a calculator, Excel, Statcrunch, class material, and the attached table whenever necessary. Do your own work. 1. In a test of the Salk polio vaccine, 33 of 200,000 children in the treatment group got paralytic polio. 115 of 200,000 children in the placebo group got paralytic polio. The probability of this happening by chance 1s 0.00000000002. Is this statistically significant? If so, at what level? Does this mean the treatment is effective? Why or why not? 2. If the sample size is n = 555 and the sample proportion is p = 0.8 then find the approximate margin of error E. 3, Identify the null and alternate hypotheses for testing the claim that the mean annual income of college graduates is less than 35,000. What would be Type I and Type II errors in this scenario