Use the paired t-interval procedure to obtain the required confidence interval. You may assume that the conditions forusing the procedure are satisfied.
-A test of abstract reasoning is given to a random sample of students before and after completing a formal logic course. The results are shown below. $\begin{array} { c c }
\text { Before } & \text { After } \
\hline 74 & 68 \
81 & 86 \
85 & 83 \
67 & 74 \
92 & 95 \
71 & 66 \
61 & 67 \
78 & 81 \
64 & 71 \
80 & 88
\end{array}$
Determine a 95% confidence interval for the difference between the mean score before completing
The course and the mean score after completing the course.
A)-0.8 to 6.0
B)-1.4 to 6.6
C)-1.7 to 6.9
D)-1.1 to 6.3

Question

Use the paired t-interval procedure to obtain the required confidence interval. You may assume that the conditions forusing the procedure are satisfied.
-A test of abstract reasoning is given to a random sample of students before and after completing a formal logic course. The results are shown below. $\begin{array} { c c } 
\text { Before } & \text { After } \
\hline 74 & 68 \
81 & 86 \
85 & 83 \
67 & 74 \
92 & 95 \
71 & 66 \
61 & 67 \
78 & 81 \
64 & 71 \
80 & 88
\end{array}$ 
Determine a 95% confidence interval for the difference between the mean score before completing
The course and the mean score after completing the course. 
A)-0.8 to 6.0
B)-1.4 to 6.6
C)-1.7 to 6.9
D)-1.1 to 6.3

Quizplus · Accepted Answer

The Answer of Use the paired t-interval procedure to obtain the required confidence interval. You may assume that the conditions forusing the procedure are satisfied.
-A test of abstract reasoning is given to a random sample of students before and after completing a formal logic course. The results are shown below. $\begin{array} { c c } 
\text { Before } & \text { After } \
\hline 74 & 68 \
81 & 86 \
85 & 83 \
67 & 74 \
92 & 95 \
71 & 66 \
61 & 67 \
78 & 81 \
64 & 71 \
80 & 88
\end{array}$ 
Determine a 95% confidence interval for the difference between the mean score before completing
The course and the mean score after completing the course. 
A)-0.8 to 6.0
B)-1.4 to 6.6
C)-1.7 to 6.9
D)-1.1 to 6.3

Use the Paired T-Interval Procedure to Obtain the Required Confidence