This Question: 1 pt 9 of 10 0 In a large diicalmal, 393A91 chldren were andoriy

Question

This Question: 1 pt 9 of 10 0 In a large diicalmal, 393A91 chldren were andoriy ass ped to two gop. The treatnemVoupcorsisted of 196 857 diees-awa one tw cenan dsease, and 30 of those children developed the disease. The other 196 634 children were given a piacebo, and 100 of those chidn develaped the doeane Consider the vecne ament gi0up to be the test sample Complete pans (a)Teoughid) below value methad? e. H a 0 01 signisicance vel is to be used to test the claim that py Pz-what confidence level should be uses? an integer or a deoimal -0000e91

Explanation / Answer

a. A COnfidence inteerval method is better.

b Here p -value and critical value method are equivalent, Both of them used standard deviation based on pooled proportion but the other method used standard deviation are different one.

c. Here for 0.01 significance level. 98% confidenceineterval is used.

d. Because the confidence ineterval doesn't consist the value of zero there is significant difference between the two proportions. Because the confidence interval consists negative values, it appears that the first proportion is less than the second proportion. There is enough evidence to support that the rate of polio for vaccination group is less than placebo group.

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