Acertain drug can be used to reduce the acid produced by the body and heal damage to the esophagus due to acid reux. The manufacturer oi the drug claims that more than 91% of patients taking the drug are healed within 8 weeks. In clinical trials, 21? of 235 patients suffering from acid reux disease were healed alter 8 weeks. Test the manufacturer's claim at the at: [1.05 level of signicance. Because npo [1 p0) = 192 > 10, the sample size is less than 5% of the population size, and the sample can be reasonably assumed to be random. the requirements for testing the hypothesis are satised. (Round to one decimal place as needed ) What are the null and alternative hypotheses? HU' p = .91 versus H1: p > .91 (Type integers or decimals. Do not round.) Find the test statistic. z 2|: = (Round to two decimal places as needed)