Data Set 10-8: Drugs that reduce emotionality make big money for drug companies. These drugs undergo extensive testing, some of which is done with animals. One common test of emotionality in rats is the number of fecal boluses that are dropped when an animal is left for 10 minutes in an open field (a 4' x 4' space). Greater emotionality is indicated by more boluses. Imagine that two drugs, aloe and vera were compared. Five rats were given aloe and five were given vera. The numbers below represent the number of boluses dropped in the open field. $$\begin{array} { r l }
\text { Aloe } & \text { Vera } \
\hline 4 & 2 \
12 & 9 \
7 & 6 \
10 & 7 \
6 & 4
\end{array}$$
-The standard error of difference for Data Set 10-8 is
A) 0.374
B) 0.837
C) 1.871
D) 3.50

Question

Data Set 10-8: Drugs that reduce emotionality make big money for drug companies. These drugs undergo extensive testing, some of which is done with animals. One common test of emotionality in rats is the number of fecal boluses that are dropped when an animal is left for 10 minutes in an open field (a 4' x 4' space). Greater emotionality is indicated by more boluses. Imagine that two drugs, aloe and vera were compared. Five rats were given aloe and five were given vera. The numbers below represent the number of boluses dropped in the open field. $$\begin{array} { r l } 
\text { Aloe } & \text { Vera } \
\hline 4 & 2 \
12 & 9 \
7 & 6 \
10 & 7 \
6 & 4
\end{array}$$
-The standard error of difference for Data Set 10-8 is
A) 0.374
B) 0.837
C) 1.871
D) 3.50

Quizplus · Accepted Answer

The standard error of difference between two means can be calculated using the formula for the standard error of the mean difference between two independent samples. Given the data, the calculation involves finding the standard deviation of each group, the number of observations, and then applying these values to find the standard error of the difference. The correct answer, based on the data provided and the necessary calculations, is 1.871, indicating a more involved statistical calculation was performed to arrive at this value.

Data Set 10-8: Drugs That Reduce Emotionality Make Big Money Aloe Vera 421297610764\begin{array} { r l } \text { Aloe } & \text { Vera } \\\hline 4 & 2 \\12 & 9 \\7 & 6 \\10 & 7 \\6 & 4\end{array} Aloe 4127106​ Vera 29674​​

Data Set 10-8: Drugs That Reduce Emotionality Make Big Money $\begin{array} { r l } \text { Aloe } & \text { Vera } \\\hline 4 & 2 \\12 & 9 \\7 & 6 \\10 & 7 \\6 & 4\end{array}$