Here Is an Excel ANOVA Table That Summarizes the Results

question 50

Multiple Choice

Here is an Excel ANOVA table that summarizes the results of an experiment to assess the effects of ambient noise level and plant location on worker productivity. The test used ? = 0.05. $$\begin{array} { | l | c | c | c | c | c | c | } \hline \text { Source of Variation } & \text { SS } & d f & M S & F & P \text {-value } & F \text { crit } \\\hline \text { Plant location } & 3.0075 & 3 & 1.0025 & 2.561 & 0.1199 & 3.862 \\\hline \text { Noise level } & 8.4075 & 3 & 2.8025 & 7.160 & 0.0093 & 3.863 \\\hline \text { Error } & 3.5225 & 9 & 0.3914 & & & \\\hline \text { Total } & 14.9375 & & & & & \\\hline\end{array}$$ The sample size is:

• A)15.
• B)10.
• C)16.
• D)impossible to determine.

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Definitions:

Confidence Interval

A collection of values obtained from statistical samples that is expected to encompass the value of an undetermined population parameter at a given confidence level.

Margin of Error

An expression of the amount of random sampling error in a survey's results, representing the range within which the true population parameter is expected to lie.

Margin of Error

The amount of error allowed in the results of a poll or survey, reflecting the confidence in the results.

Observations

Data collected during an experiment or research which are analyzed to gain insights and draw conclusions.