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5. A researcher claims that 75% percent of Americans think they are unlikely to contract the...

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.

Math   Statistics-And-Probability   
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