Homework: Sec 7.4 Question list g\\" Media 4 Media 5 Media 6 Question 1 Question 2 Question 3 Question 4 I HW Score: 94.56%, 11.35 of 12 points 9 Points: 0.63 of 1 Question 4, 7.4.7-T Part 6 of 6 A medical researcher says that less than 78% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 400 adults in that country, 75% think that healthy children should be required to be vaccinated. At a = 0.01, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. 20 = - 2.33 (Round to two decimal places as needed. Use a comma to separate answers as needed.) Identify the rejection region(s). Select the correct choice below and ll in the answer box(es) to complete your choice. (Round to two decimal places as needed.) The rejection regions are 2 V The rejection region is z The rejection region is