Question

5. A researcher claims that 75% percent of Americans think they are unlikely to contract the Zika virus. In a random sample of 230 Americans, 215 think they are unlikely to contract the Zika virus. At α = 0.05, is there enough evidence to reject the researcher’s claim?

(a) identify the claim and state H0 and H1

(b) find the critical value

(c) find the test statistic

(d) decide whether to reject or fail to reject the null hypothesis

(e) interpret the decision in the context of the original claim.

Answer #2

answered by: anonymous

A researcher claims that 85% percent of American think they are
unlikely to contract the Zika virus. In a random sample of 300
Americans, 225 think they are unlikely to control the Zika virus.
At 5% level of significance, is there enough evidence to reject the
researcher's claim?
What is the Null hypothesis (H0); Alternate hypothesis (H1); and
the direction of the test?
Which distribution is used in this case?
What is the critical value?
What is the Test Statistic...

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