A gasoline distributor wonders whether an individual's income level influences the grade of gasoline purchased. The...
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A gasoline distributor wonders whether an individual's income level influences the grade of gasoline purchased. The following is a contingency table from a random sample of 300 individuals. Personal Income Less than $50,000 $50,000 or More 60 Using a = .01, observed chi-square value is 24.93 4.44 32,89 Type of Gasoline Regular Premium Extra Premium 90 20 60 51.79 O 54.98 10 60 A gasoline distributor wonders whether an individual's income level influences the grade of gasoline purchased. The following is a contingency table from a random sample of 300 individuals. Personal Income Less than $50,000 $50,000 or More 60 Using a = .01, observed chi-square value is 24.93 4.44 32,89 Type of Gasoline Regular Premium Extra Premium 90 20 60 51.79 O 54.98 10 60
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Related Book For
Basic Business Statistics Concepts and Applications
ISBN: 978-0132168380
12th edition
Authors: Mark L. Berenson, David M. Levine, Timothy C. Krehbiel
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