To test whether the time required to fully load a standard delivery truck is the same for three work shifts (day, evening, and night), NatEx obtained the following data on the time (in minutes) needed to pack a truck. Use these data to test whether the population mean times for loading a truck differ for the three work shifts. Use α = .05.
$$\begin{array} { c c c c }
\text { Observation } & \text { Day Shift } & \text { Evening Shift } & \text { Night Shift } \
\hline 1 & 92 & 83 & 89 \
2 & 81 & 93 & 97 \
3 & 103 & 79 & 95 \
4 & 77 & 102 & 88 \
5 & 82 & 84 & 106 \
\hline \text { Sample mean } & 87.0 & 88.2 & 95.0 \
\text { Sample variance } & 110.5 & 85.7 & 52.5
\end{array}$$

Question

To test whether the time required to fully load a standard delivery truck is the same for three work shifts (day, evening, and night), NatEx obtained the following data on the time (in minutes) needed to pack a truck. Use these data to test whether the population mean times for loading a truck differ for the three work shifts. Use α = .05.
​ $$\begin{array} { c c c c } 
\text { Observation } & \text { Day Shift } & \text { Evening Shift } & \text { Night Shift } \
\hline 1 & 92 & 83 & 89 \
2 & 81 & 93 & 97 \
3 & 103 & 79 & 95 \
4 & 77 & 102 & 88 \
5 & 82 & 84 & 106 \
\hline \text { Sample mean } & 87.0 & 88.2 & 95.0 \
\text { Sample variance } & 110.5 & 85.7 & 52.5
\end{array}$$ ​

Quizplus · Accepted Answer

The Answer of To test whether the time required to fully load a standard delivery truck is the same for three work shifts (day, evening, and night), NatEx obtained the following data on the time (in minutes) needed to pack a truck. Use these data to test whether the population mean times for loading a truck differ for the three work shifts. Use α = .05.
​ $$\begin{array} { c c c c } 
\text { Observation } & \text { Day Shift } & \text { Evening Shift } & \text { Night Shift } \
\hline 1 & 92 & 83 & 89 \
2 & 81 & 93 & 97 \
3 & 103 & 79 & 95 \
4 & 77 & 102 & 88 \
5 & 82 & 84 & 106 \
\hline \text { Sample mean } & 87.0 & 88.2 & 95.0 \
\text { Sample variance } & 110.5 & 85.7 & 52.5
\end{array}$$ ​

To Test Whether the Time Required to Fully Load a Standard