Answered: 14) Use AVOVA to test the claim that…

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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Transcribed Image Text:14) Use AVOVA to test the claim that the samples come from populations with the same mean. Assume that the populations are normally distributed with the same variance. A consumer magazine wants to compare the lifetimes of ballpoint pens of three different types. The magazine takes a random sample of pens of each type in the following table. Do the data indicate that there is a difference in mean lifetime for the three brands of ballpoint pens? Find the P-Value. Use a 0.01. Brand 1 Brand 2 Brand 3 260 250 218 238 230 249 174 185 235 No; P-Value = 0.8929 O No; P-Value 0.0095 O Yes; P-Value 0.8925 Yes; P-Value = 0.0091

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