A market researcherbelieves that in a certain population the proportion of persons preferring brands A, B, C, and D of tooth paste are 0.20, 0.70, 0.02 and 0.08 respectively. A simple random sample of 600 persons drawn from the population shows the following preference. Brand A B D Number of person 190 344 44 22 Do these data provide sufficient evidence to reject the researcher's belief at a = 0.01

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A market researcher believes that in a certain population the proportion of persons preferring brands A, B, C,
and D of tooth paste are 0.20, 0.70, 0.02 and 0.08 respectively. A simple random sample of 600 persons
drawn from the population shows the following preference.
Brand
A
B
D
Number of person
190
344
44
22
Do these data provide sufficient evidence to reject the researcher's belief at a = 0.01
Transcribed Image Text:A market researcher believes that in a certain population the proportion of persons preferring brands A, B, C, and D of tooth paste are 0.20, 0.70, 0.02 and 0.08 respectively. A simple random sample of 600 persons drawn from the population shows the following preference. Brand A B D Number of person 190 344 44 22 Do these data provide sufficient evidence to reject the researcher's belief at a = 0.01
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