Question

A medical researcher says that less than 82% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 600 adults in that country, 80% think that healthy children should be required to be vaccinated. At alphaαequals=0.01, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below.

c) Find the standardized test statistic z.

z= ???

d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim.

(Fail to reject/ Reject) the null hypothesis. There (is/ is not) enough evidence to support the researcher's claim.

Please explain your answers, as I do not understand how to do this! Thank you :)

Answer #1

A medical researcher says that less than
88%
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,
85%
think that healthy children should be required to be vaccinated.
At α=0.01,
is there enough evidence to support the researcher's claim?
Complete parts (a) through (e) below.
(a) Identify the claim and state H0 and Ha.
Identify the claim in this scenario. Select the correct...

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a
medical researcher says That list than 80% of adults in a certain
country think that healthy children should be required to be
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think that healthy children should be required to be vaccinated at
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