(Chapter 12)
42. Martin Motors has in stock three automobiles of the same make and model. The prexy would
like to compare the gas consumption of the three cars (labeled car A, car B, and car C)
using four different types of gasoline. For for each one trial, a gallon of gasoline was added to
an empty tank, and the car was set until it ran out of gas. The following table shows
the number of miles driven in each trial.
Distance (miles)
Types of Gasoline elevator car A car B Car C
rhythmical 22.4 20.8 21.5
Super regular 17.0 19.4 20.7
nonleaded 19.2 20.2 21.2
Premium unleaded 20.3 18.620.4
I used a two-part ANOVA to analyze the data. The output is as follows:
ANOVA: Two-Factor Without replica
SUMMARY Count Sum Average Variance
Regular 3 64.7 21.56666667 0.64333
Super Regular 3 57.1 19.03333333 3.52333
Unleaded 3 60.6 20.2 1
Premium Unleaded 3 59.3 19.76666667 1.02333
Car A: 4 78.9 19.725 5.0625
Car B: 4 79 19.
75 0.916666667
Car C: 4 83.8 20.95 0.243333333
ANOVA
Source of Variation
SS df MS F P-value F crit
Rows: 10.20916667 3 3.403055556 2.413990148 0.164988317 4.757062664
Columns: 3.921666667 2 1.960833333 1.390935961 0.318927857 5.14325285
Error 8.458333333 6 1.409722222
Total: 22.58916667 11
Using the .05 level of...If you want to cop a full essay, order it on our website: Orderessay
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