A Firm Is Concerned with Variability in Hourly Output at Several

question 9

Multiple Choice

A firm is concerned with variability in hourly output at several factories and shifts. Here are the results of an ANOVA using output per hour as the dependent variable (some information is missing) . $$\begin{array} { | l | c | c | c | c | } \hline \text { Source } & \text { Sum of Squares } & d f & \text { Mean Square } & \text { FRatio } \\\hline \text { Factory } & 19012.5 & 1 & 19012.5 & 26.427 \\\hline \text { Shift } & 258.333 & 2 & 129.167 & 0.180 \\\hline \text { Factory*Shift } & 80908.333 & 2 & 40454.167 & 56.230 \\\hline \text { Error } & 8633.333 & 12 & 719.444 & \\\hline \text { Total } & 108812.5 & 17 & 6400.735 & \\\hline\end{array}$$ The number of observations in each treatment cell (row-column intersection) is:

• A)1.
• B)2.
• C)3.
• D)impossible to determine.

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