A medical researcher says that less than 83% 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 a = 0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (Round to two decimal places as needed. Üse a comma to separate answers as needed.) Identify the rejection region(s). Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) O A. The rejection region is OC. The rejection region is z> O D. The rejection region is z< (c) Find the standardized test statistic z. (Round to two decimal places as needed.)

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A medical researcher says that less than 83% 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 a = 0.10, is there enough evidence to support the researcher's claim?
Complete parts (a) through (e) below.
(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 fill in the answer box(es) to complete your choice.
(Round to two decimal places as needed.)
O A. The rejection region is
<z<
B. The rejection regions arez<
and z>
O C. The rejection region is z>
O D. The rejection region isz<
(c) Find the standardized test statistic z.
(Round to two decimal places as needed.)
Transcribed Image Text:A medical researcher says that less than 83% 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 a = 0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (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 fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) O A. The rejection region is <z< B. The rejection regions arez< and z> O C. The rejection region is z> O D. The rejection region isz< (c) Find the standardized test statistic z. (Round to two decimal places as needed.)
A medical researcher says that less than 83% 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 a= 0.10, is there enough evidence to support the researcher's claim?
Complete parts (a) through (e) below.
O A. The rejection region is
<z<
B. The rejection regions are z <
and z>
C. The rejection region is z>
D. The rejection region is z<
(c) Find the standardized test statistic z.
(Round to two decimal places as needed.)
(d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim.
V the null hypothesis. There
V enough evidence to
V the researcher's claim.
Transcribed Image Text:A medical researcher says that less than 83% 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 a= 0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. O A. The rejection region is <z< B. The rejection regions are z < and z> C. The rejection region is z> D. The rejection region is z< (c) Find the standardized test statistic z. (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim. V the null hypothesis. There V enough evidence to V the researcher's claim.
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