A researcher is estimating the average difference between two population means based on matched-pairs samples.She gathers data on each pair in the study resulting in: $$\begin{array} { | r | r | r | }
\hline {\text { Pair } } & \text { Group 1 } & \text { Group } 2 \
\hline 1 & 10 & 12 \
\hline 2 & 8 & 9 \
\hline 3 & 11 & 11 \
\hline 4 & 8 & 10 \
\hline 5 & 9 & 12 \
\hline
\end{array}$$ Assume that the data are normally distributed in the population.A 95% confidence interval would be _______.
A)-3.02 to -0.18
B)-1.6 to -1.09
C)-2.11 to 1.09
D)-2.11 to -1.09
E)-3.23 to 2.23

Question

A researcher is estimating the average difference between two population means based on matched-pairs samples.She gathers data on each pair in the study resulting in: $$\begin{array} { | r | r | r | } 
\hline {\text { Pair } } & \text { Group 1 } & \text { Group } 2 \
\hline 1 & 10 & 12 \
\hline 2 & 8 & 9 \
\hline 3 & 11 & 11 \
\hline 4 & 8 & 10 \
\hline 5 & 9 & 12 \
\hline
\end{array}$$ Assume that the data are normally distributed in the population.A 95% confidence interval would be _______.
A)-3.02 to -0.18
B)-1.6 to -1.09
C)-2.11 to 1.09
D)-2.11 to -1.09
E)-3.23 to 2.23

Quizplus · Accepted Answer

The Answer of A researcher is estimating the average difference between two population means based on matched-pairs samples.She gathers data on each pair in the study resulting in: $$\begin{array} { | r | r | r | } 
\hline {\text { Pair } } & \text { Group 1 } & \text { Group } 2 \
\hline 1 & 10 & 12 \
\hline 2 & 8 & 9 \
\hline 3 & 11 & 11 \
\hline 4 & 8 & 10 \
\hline 5 & 9 & 12 \
\hline
\end{array}$$ Assume that the data are normally distributed in the population.A 95% confidence interval would be _______.
A)-3.02 to -0.18
B)-1.6 to -1.09
C)-2.11 to 1.09
D)-2.11 to -1.09
E)-3.23 to 2.23

A Researcher Is Estimating the Average Difference Between Two Population