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Using Excel data analysis calculate't' distribution and interpret the result.
The fuel efficiencies for a sample of 27 compact, midsize, and large cars are entered into a statistical software package. Analysis of variance is used to investigate if there is a difference in the mean mileage of the three cars. What do you conclude? Use the .01 significance level.
Summary
Groups
count
Sum
Average
Variance
Compact
12
268.3
22.35833
9.388106
Midsize
9
172.4
19.15556
7.315278
Large
6
100.5
16.75
7.303
Anova
Source of Variation
SS
df
MS
F
p-value
Between groups
136.4803
2
68.24014
8.258752
0.001866
Within groups
198.3064
24
8.262766
Total
334.7867
26
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