"Achievement test scores are declining all around us,"brooded Professor Probity. "Not in my class,"vouchsafed Professor Paragon. "Here are my final-exam scores for last year and this year on the same exam. Run your own t test on them. Calculate the effect size index."What did Probity discover? $$\begin{array} { c c }
\text { Last Year } & \text { This Year } \
\hline 29 & 27 \
27 & 28 \
26 & 25 \
22 & 24 \
19 & 22 \
15 & 20 \
14 & 18 \
13 & 16 \
10 & 12
\end{array}$$

Question

"Achievement test scores are declining all around us,"brooded Professor Probity. "Not in my class,"vouchsafed Professor Paragon. "Here are my final-exam scores for last year and this year on the same exam. Run your own t test on them. Calculate the effect size index."What did Probity discover? $$\begin{array} { c c } 
\text { Last Year } & \text { This Year } \
\hline 29 & 27 \
27 & 28 \
26 & 25 \
22 & 24 \
19 & 22 \
15 & 20 \
14 & 18 \
13 & 16 \
10 & 12
\end{array}$$

Quizplus · Accepted Answer

The Answer of "Achievement test scores are declining all around us,"brooded Professor Probity. "Not in my class,"vouchsafed Professor Paragon. "Here are my final-exam scores for last year and this year on the same exam. Run your own t test on them. Calculate the effect size index."What did Probity discover? $$\begin{array} { c c } 
\text { Last Year } & \text { This Year } \
\hline 29 & 27 \
27 & 28 \
26 & 25 \
22 & 24 \
19 & 22 \
15 & 20 \
14 & 18 \
13 & 16 \
10 & 12
\end{array}$$

"Achievement Test Scores Are Declining All Around Us,"brooded Professor Probity