MyStatLab Quizzes & Tests MAT 181-09 Homework: HW8 Score: 0 of 1 pt 34 ot 40 P8

Question

MyStatLab Quizzes & Tests MAT 181-09 Homework: HW8 Score: 0 of 1 pt 34 ot 40 P8 complete) HW Score: 84 99%, 34 of 40 pts 7.2.17 A EQuestion Help clinical tests a method designed to increase the of concering agit. In the study 538 babies were born, and them were grls Use the sample data to construct a 99% confidence interal estimate of the percentage gifs born Based onthe resut does the method appear to be efectee? (Round to three decimalplaces as heeded Enter your answer in the edit nelds and then click check Answer remaining

Explanation / Answer

The statistical software output for this problem is:

One sample proportion confidence interval:
p : Proportion of successes
Method: Standard-Wald

99% confidence interval results:

Hence,

The 99% confidence interval will be:

0.444 < p < 0.556

Proportion Count Total Sample Prop. Std. Err. L. Limit U. Limit p 269 538 0.5 0.021556531 0.44447406 0.55552594

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