posted by Ox on .
Assume a simple random sample has been taken, the conditions for binomial distribution are met and the sample proportions can be approximated by a normal distribution. In order to evaluate a course of therapy to treat brain tumors, a sample of 300 patients revealed that 96 patients were responsive to a certain course of treatment. Test the claim that more than 30% of patients with brain tumors were responsive to the treatment. Use a 0.01 significance level.What is the alternative hypothesis?