The Following MINITAB Output Display Presents a 95% Confidence Interval

question 29

Multiple Choice

The following MINITAB output display presents a 95% confidence interval for the difference between two proportions.
$\begin{array} { l r r c } \text { Sample } & \text { X } & \text { N } & \text { Sample P } \\ 1 & 109 & 934 & 0.116702 \\ 2 & 103 & 539 & 0.191095 \end{array}$
Difference $= \mathrm { p } ( 1 ) - \mathrm { p } ( 2 )$
Estimate for difference: $- 0.074393$
$95 \%$ CI for difference: $( - 0.113 , - 0.035 )$
What is the point estimate of $p _ { 1 } - p _ { 2 }$ ?

• A) \(0.144\)
• B) \(0.307797\)
• C) \(- 0.074393\)
• D) \(0.078\)

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