Question
A medical researcher says that 80% of U.S. adults think that healthy children should be required to be vaccinated. In a random sample of 200
A medical researcher says that 80% of U.S. adults think that healthy children should be required to be vaccinated. In a random sample of 200 U.S. adults, 150 think that healthy children should be required to be vaccinated. At 5% level of significance, is there enough evidence to prove that the true proportion is less than the researcher's claim?
What is the Null hypothesis (H0); Alternate hypothesis (H1); and the direction of the test?
A) p > 0.8, p< 0.8, right tailed test.
B) p<= 0.8, p<0.8, right tailed test.
C) p=0.8, p<>0.8, two tailed test.
D) p= 0.8, p< 0.8, left tailed test
Which distribution is used in this case?
A) z
B) t
C) Does not apply
D) Binomial
What is the critical value?
A) -1.96
B) 1.96
C) -1.645
D) 1.645
What is the Test Statistic Value?
A) 1.63
B) 0.71
C) -1.77
D) Doesn't apply
What is the P-value?
A) 0.0516
B) 0.9484
C) 0.9616
D) 0.0384
What is the conclusion of the test?
A) Fail to reject Null Hypothesis.
B) Test is Insignificant
C) Fail to reject Alternative Hypothesis.
D) Test is Significant
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