Answered: A research firm tests the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Q. No. 2.
A research firm tests the miles-per-gallon characteristics of four brands of gasoline. Because of different gasoline performance characteristics in different brands of automobiles, five brands of automobiles are selected and treated as blocks in the experiment; that is, each brand of automobile is tested with each type of gasoline. The results of the experiment (in miles per gallon) are as follows:

a. At 5 percent level of significance, test whether the mean miles-per-gallon differ for gasoline brands or by automobiles?
b. How your results will change on removing the Block effect? Explain.

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