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A Two-Sample zz -Test for Two Population Proportions Is to Be Performed Using

Question 13

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A two-sample zz -test for two population proportions is to be performed using the PP -value approach. The null hypothesis is H0:p1=p2H _ { 0 } : p _ { 1 } = p _ { 2 } and the alternative is HA:p1p2H _ { A } : p _ { 1 } \neq p _ { 2 } . Use the given sample data to find the pp -value for the hypothesis test. Give an interpretation of the pp -value.

n1=200,x1=11,n2=100, and x2=8n _ { 1 } = 200 , x _ { 1 } = 11 , n _ { 2 } = 100 , \text { and } x _ { 2 } = 8


A) PP -value =0.402= 0.402 ; If there is no difference in the proportions, there is a 40.2%40.2 \% chance of seeing the exact observed difference by natural sampling variation.

B) PP -value =0.1011= 0.1011 ; There is about a 10.11%10.11 \% chance that the two proportions are equal.

C) PP -value =0.0201= 0.0201 ; There is about a 2.01%2.01 \% chance that the two proportions are equal

D) PP -value =0.402= 0.402 ; If there is no difference in the proportions, there is about a 40.2%40.2 \% chance of seeing the observed difference or larger by natural sampling variation.

E) PP -value =0.0201= 0.0201 ; If there is no difference in the proportions, there is about a 2.01%2.01 \% chance of seeing the observed difference or larger by natural sampling variation.

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