7.4(4)

A medical researcher says that less than

79%

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,

77%

think that healthy children should be required to be vaccinated. At

=0.05,

is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below.

Question content area bottom

Part 1

(a) Identify the claim and state

H0

and

Ha.

Identify the claim in this scenario. Select the correct choice below and fill in the answer box to finish your choice.

(input integer or a decimal. Do not round.)

A.

More than

enter your response here%

of adults in the country think that healthy children should be required to be vaccinated.

B.

Less than

enter your response here%

of adults in the country think that healthy children should be required to be vaccinated.

C.

The percentage of adults in the country who think that healthy children should be required to be vaccinated is not

enter your response here%.

D.

enter your response here%

of adults in the country think that healthy children should be required to be vaccinated.