Catherine Chao, Director of Marketing Research, is evaluating consumer acceptance of alternative toothpaste packages. She wonders whether acceptance is influenced by children in the household. Her staff prepared the following contingency table from a random sample of 100 households. Children in Household Pre- teenagers none teenagers Preferred Pump 30 20 10 Package Tube 10 10 Using a-.05, the observed value of chi-square is, O 18.79 O 16.79 O 5.28 O 9.49 O 13.19 20

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Catherine Chao, Director of Marketing Research, is evaluating consumer acceptance of alternative
toothpaste packages. She wonders whether acceptance is influenced by children in the household. Her
staff prepared the following contingency table from a random sample of 100 households.
Children in Household
Pre-
teenagers
none
teenagers
Preferred
Pump
30
20
10
Package
Tube
10
10
20
Using a-.05, the observed value of chi-square is.
O 18.79
O 16.79
O 5.28
O 9.49
O 13.19
Transcribed Image Text:Catherine Chao, Director of Marketing Research, is evaluating consumer acceptance of alternative toothpaste packages. She wonders whether acceptance is influenced by children in the household. Her staff prepared the following contingency table from a random sample of 100 households. Children in Household Pre- teenagers none teenagers Preferred Pump 30 20 10 Package Tube 10 10 20 Using a-.05, the observed value of chi-square is. O 18.79 O 16.79 O 5.28 O 9.49 O 13.19
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