Test: 8-3 MyStatLab: Final Exam Submit Test This Question: 10 pts 18 of 28 (27 c

Question

Test: 8-3 MyStatLab: Final Exam Submit Test This Question: 10 pts 18 of 28 (27 complete) This Test: 280 pts possible Question Help * In randomized, double-blind clinical trials of a new vaccine, rats were randomly divided into two groups. Subjects in group 1 received the new vaccine while subjects in group 2 received a control vaccine. After the first dose, 107 of 718 subjects in the experimental group (group 1) experienced fever as a side effect. After the first dose 9 o 639 of the subjects in the control yo p group 2 expe enced fever as a sade efect Construct a 99% confidence nterval for the difference between the two population proportions, P1 -P2. Use x1 107, n, 718, x2 59, and n2 639 Show Expert 41 The 99% confidence interval for p1-p2is(). (Use ascending order. Round to three decimal places as needed.) Practice Why is it des intervals So the Enter your answer in each of the answer boxes javascriptdoExercise(18) 29

Explanation / Answer

The statistical software output for this problem is:

Two sample proportion summary confidence interval:
p1 : proportion of successes for population 1
p2 : proportion of successes for population 2
p1 - p2 : Difference in proportions

99% confidence interval results:

Hence,

99% confidence interval will be:

(0.012, 0.102)

Difference Count1 Total1 Count2 Total2 Sample Diff. Std. Err. L. Limit U. Limit p1 - p2 107 718 59 639 0.056693301 0.01754359 0.011504008 0.10188259

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