Engineers are testing company fleet vehicle fuel economy (miles per gallon) performance by using different types...

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Engineers are testing company fleet vehicle fuel economy (milesper gallon) performance by using different types of fuel. Onevehicle of each size is tested. Does this sample provide sufficientevidence to conclude that there is a significant difference intreatment means?
87 Octane 89 Octane 91 Octane Ethanol 5% Ethanol 10%
Compact 30.8 28.4 17.7 30.7 31.1
Mid-Size 17.0 19.9 20.1 17.1 31.4
Full-Size 28.9 29.0 20.4 27.0 31.3
SUV 21.9 22.8 19.5 18.7 29.6

(b) Fill in the boxes. (Round your SSvalues to 3 decimal places, F values to 2 decimal places,and other answers to 4 decimal places.)
Two-Factor ANOVA
Source SS df MS F p-value
Treatments (Fuel Type)
Blocks (Vehicle Size)
Error
Total
Group Mean n Std. Dev
87 Octane
89 Octane
91 Octane
Ethanol 5%
Ethanol 10%
Compact
Mid-Size
Full-Size
SUV
Total

Answer & Explanation Solved by verified expert

4.3 Ratings (826 Votes)

Null HypothesisThere is no difference among the fuel type in terms of fueleconomy There is a difference amongst at least one pair There is no difference among the Vehicle types in terms of Fueleconomy There is a difference amongst at least one pairLevel of See Answer

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	87 Octane	89 Octane	91 Octane	Ethanol 5%	Ethanol 10%
Compact	30.8	28.4	17.7	30.7	31.1
Mid-Size	17.0	19.9	20.1	17.1	31.4
Full-Size	28.9	29.0	20.4	27.0	31.3
SUV	21.9	22.8	19.5	18.7	29.6

Two-Factor ANOVA
Source	SS	df	MS	F	p-value
Treatments (Fuel Type)
Blocks (Vehicle Size)
Error
Total

Group	Mean	n	Std. Dev
87 Octane
89 Octane
91 Octane
Ethanol 5%
Ethanol 10%

Compact
Mid-Size
Full-Size
SUV
Total