A medical researcher says that less than 80% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 300 adults in that country, 7 think that healthy children should be required to be vaccinated. At a=0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and Ha 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.) OA. % of adults in the country think that healthy children should be required to be vaccinated. % of adults in the country think that healthy children should be required to be vaccinated. OB. Less than OC. More than % of adults in the country think that healthy children should be required to be vaccinated. OD. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not 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 con choice below and fill in the answer hoves to complete your choice