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

question 14

Multiple Choice

A two-sample $z$ -test for two population proportions is to be performed using the $P$ -value approach. The null hypothesis is $H _ { 0 } : p _ { 1 } = p _ { 2 }$ and the alternative is $H _ { A } : p _ { 1 } \neq p _ { 2 }$ . Use the given sample data to find the $p$ -value for the hypothesis test. Give an interpretation of the $p$ -value.

$$n _ { 1 } = 200 , x _ { 1 } = 11 , n _ { 2 } = 100 , \text { and } x _ { 2 } = 8$$

• A) \(P\)-value \(= 0.402\); If there is no difference in the proportions, there is a \(40.2 \%\) chance of seeing the exact observed difference by natural sampling variation.
• B) \(P\)-value \(= 0.1011\); There is about a \(10.11 \%\) chance that the two proportions are equal.
• C) \(P\)-value \(= 0.0201\); There is about a \(2.01 \%\) chance that the two proportions are equal
• D) \(P\)-value \(= 0.402\); If there is no difference in the proportions, there is about a \(40.2 \%\) chance of seeing the observed difference or larger by natural sampling variation.
• E) \(P\)-value \(= 0.0201\); If there is no difference in the proportions, there is about a \(2.01 \%\) chance of seeing the observed difference or larger by natural sampling variation.

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