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: $$\begin{array} { | l | l | l | }
\hline \text { Pair } & \text { Group 1 } & \text { Group 2 } \
\hline 1 & 10 & 12 \
\hline 2 & 8 & 9 \
\hline 3 & 11 & 11 \
\hline 4 & 8 & 10 \
\hline 5 & 9 & 12 \
\hline
\end{array}$$ Assume that the data are normally distributed in the population.To obtain a 90% confidence interval, the table t value would be _______.
A)1.86
B)1.397
C)1.533
D)2.132
E)3.346

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: $$\begin{array} { | l | l | l | } 
\hline \text { Pair } & \text { Group 1 } & \text { Group 2 } \
\hline 1 & 10 & 12 \
\hline 2 & 8 & 9 \
\hline 3 & 11 & 11 \
\hline 4 & 8 & 10 \
\hline 5 & 9 & 12 \
\hline
\end{array}$$ Assume that the data are normally distributed in the population.To obtain a 90% confidence interval, the table t value would be _______.
A)1.86
B)1.397
C)1.533
D)2.132
E)3.346

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: $$\begin{array} { | l | l | l | } 
\hline \text { Pair } & \text { Group 1 } & \text { Group 2 } \
\hline 1 & 10 & 12 \
\hline 2 & 8 & 9 \
\hline 3 & 11 & 11 \
\hline 4 & 8 & 10 \
\hline 5 & 9 & 12 \
\hline
\end{array}$$ Assume that the data are normally distributed in the population.To obtain a 90% confidence interval, the table t value would be _______.
A)1.86
B)1.397
C)1.533
D)2.132
E)3.346

A Researcher Is Estimating the Average Difference Between Two Population