Can you help me answer these questions please?

16) A survey claims that 9 out of 10 doctors (Le, 90%) recommend brand Z for their patients who have children. To test this claim Conduct a full hypothesis test and determine if the given claim is supported or not supported at the 0.05 significance level. against the alternative that the actual proportion of doctors who recommend brand Z is less than 90%, a random sample of doctors 19) A manufacturer considers his production process to be out of control when defects exceed 3%%. In a random sample of 85 items, was taken. Suppose the test statistic is 2 =-1.75. the defect rate is 5.88%% but the manager claims that this is only a sample fluctuation and production is not really out of control. Test Can we conclude that He should be rejected at the a] a = 0.010 bja= 0.05 () a = 0.01 levels? whether the manufacturer's claim that production is out of control is supported or not supported. A) supported B) not supported Ajaj yes; bj yes; cl yes Bj a] no; bj no; cj no () a] no; bj no; c) yes D) a) yes; bj yes; c) no 17) A researcher conducts a hypothesis test on a population proportion. Here are the results: Her null and alternative hypothesis are Ho: p = 0.4 and Hi: p