Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores In
$1,000) are shown below.
$$\begin{array} { c c c }
\text { Store 1 } & \text { Store 2 } &\text { Store 3 } \
46 & 34 & 33 \
47 & 36 & 31 \
45 & 35 & 35 \
42 & 39 &\45
\end{array}$$
a. Compute the overall mean .
b. At 95% confidence, test to see if there is a significant difference in the average sales of the three stores.

Question

Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores In
$1,000) are shown below.
 $$\begin{array} { c c c } 
\text { Store 1 } & \text { Store 2 } &\text { Store 3 } \
46 & 34 & 33 \
47 & 36 & 31 \
45 & 35 & 35 \
42 & 39 &\45
\end{array}$$ 
a. Compute the overall mean .
b. At 95% confidence, test to see if there is a significant difference in the average sales of the three stores.

Quizplus · Accepted Answer

The Answer of Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores In
$1,000) are shown below.
 $$\begin{array} { c c c } 
\text { Store 1 } & \text { Store 2 } &\text { Store 3 } \
46 & 34 & 33 \
47 & 36 & 31 \
45 & 35 & 35 \
42 & 39 &\45
\end{array}$$ 
a. Compute the overall mean .
b. At 95% confidence, test to see if there is a significant difference in the average sales of the three stores.

Nancy, Inc A Compute the Overall Mean