A medical researcher says that less than 81% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 200 adults in that country, 79% think that healthy children should be required to be vaccinated. At a = 0.05, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and H Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. % of adults in the country think that healthy children should be required to be vaccinated. O B. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not % O C. More than % of adults in the country think that healthy children should be required to be vaccinated. OD. Less than % of adults in the country think that healthy children should be required to be vaccinated. Let p be the population proportion of successes, where a success is an adult in the country who thinks that healthy children should be required to be vaccinated. State Ho and H Select the correct choice below and fill in the answer baxes to complete your choice. (Round to two decimal places as needed.) O A. Ho: ps O B. H: p= OC. Hạ: p2 H: p> H, p4 Hp< O D. Ho: p< O E Ho: p# H, p= OF. Ho p> H: p2 H ps (b) Find the critical value(s) and identify the rejection region(s). Identify the critical value(s) for this test. A medical researcher says that less than 81% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 200 adults in that country, 79% think that healthy children should be required to be vaccinated. At a =0.05, is there enough evidence support the researcher's claim? Complete parts (a) through (e) below. Hg:p2 Ha: ps (b) Find the critical value(s) and identify the rejection region(s). Identify the critical value(s) for this test. (Round to two decimal places as needed. Use a comma to separate answers needed.) Identify the rejection region(s). Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) O A. The rejection regions are z< and z>. O B. The rejection region is (c) Find the standardized test statistic z. z= (Round to two decimal places as needed.) (d) Decide whether reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim. V the null hypothesis. There V enough evidence to V the researcher's claim.