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Four chemical plants discharge effluents into streams in the vicinity of their locations. To determine if there is any difference in the extent of...
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2. Four chemical plants discharge effluents into streams in the vicinity of their
locations. To determine if there is any difference in the extent of pollution
created by the effluents, five samples of liquid waste were collected from each
plant. The data collected is as follows:
Plant
Polluting Effluents (1b/gal of waste)
A
1.65
1.72
1.50
1.37
1.60
B
1.70
1.85
1.46
2.05
1.80
1.40
1.75
1.38
1.65
2.00
D
2.10
1.95
1.65
1.88
2.00
(a) Use the Anova: Single Factor tool from the Analysis Toolpak in Microsoft
Excel to perform a one-way ANOVA on the above data. Type the data
into a blank workbook and follow the procedure described in Example 4
in Unit 7.3. Include the Excel output in your assignment submission.
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(b) Do the data provide sufficient evidence to indicate a difference in the
mean weight of effluents per gallon in the effluents discharged from the
four plants? Test using o = 0.05.

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