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4. During a research survey, a random sample of 400 runners of all ages were asked to indicate their first preference among 3 brands of running shoes. The results are set out in the table below. Age Under 20 20 to 40 Over 40 Total A 30 I 80 30 140 Brand B 60 110 10 180 C 30 30 20 80 Total 120 220 60 400 Test whether there is a relationship between running shoe brand and at the 5% level. age of runner

4. During a research survey, a random sample of 400 runners of all ages were asked to indicate their first preference among 3 brands of running shoes. The results are set out in the table below. Age Under 20 20 to 40 Over 40 Total A 30 I 80 30 140 Brand B 60 110 10 180 C 30 30 20 80 Total 120 220 60 400 Test whether there is a relationship between running shoe brand and at the 5% level. age of runner

MATLAB: An Introduction with Applications
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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14. During a research survey, a random sample of 400 runners of all ages were asked to indicate their first preference among 3 brands of running shoes. The results are set out in the table below. Age Under 20 20 to 40 Over 40 Total A I 30 80 30 140 Brand B 60 110 10 180 C 30 30 20 80 Total 120 220 60 400 Test whether there is a relationship between running shoe brand and age of runner at the 5% level.
Transcribed Image Text:14. During a research survey, a random sample of 400 runners of all ages were asked to indicate their first preference among 3 brands of running shoes. The results are set out in the table below. Age Under 20 20 to 40 Over 40 Total A I 30 80 30 140 Brand B 60 110 10 180 C 30 30 20 80 Total 120 220 60 400 Test whether there is a relationship between running shoe brand and age of runner at the 5% level.
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