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Two random samples are taken, with each group asked if they support a particular candidate. A...

Two random samples are taken, with each group asked if they support a particular candidate. A summary of the sample sizes and proportions of each group answering yes'' are given below.

Pop. 1:Pop. 2:n1=89,n2=94,p^1=0.794p^2=0.596


Suppose that the data yields (0.0501,0.3459) for a confidence interval for the difference p1−p2 of the population proportions. What is the confidence level? (Give your answer in terms of percentages.)

Confidence Level =

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Answer #1

We have here given,

Lower confidence limit = 0.0501

Upper confidence limit is =0.3459

Substitute given values into above formula

Apprximately 97% confidence level is used

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