Question

a medical researcher says that less than 72% of adults in a certain country think that healthy children should be required to be vaccinated. in a random sample of 500 adults in that country, 69% think that healthy children should be required to be vaccinated. at α = 0.05, is there enough evidence to support the researcher’s claim? complete parts (a) through (d) below.

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.)
a. more than % of adults in the country think that healthy children should be required to be vaccinated.
b. the percentage of adults in the country who think that healthy children should be required to be vaccinated is not %.
c. less than % of adults in the country think that healthy children should be required to be vaccinated.
d. % of adults in the country think that healthy children should be required to be vaccinated

Explanation:

The researcher's claim is that less than 72% of adults in the country think healthy children should be vaccinated. So we look for the option that matches this claim. Option C states "Less than [ ]% of adults in the country think that healthy children should be required to be vaccinated", and the percentage here should be 72 (from the researcher's claim "less than 72%").

Answer:

C. Less than 72% of adults in the country think that healthy children should be required to be vaccinated