Suppose a marketing research firm would like to examine if the social networking site that a person primarily uses is influenced by his or her age. In a randomly drawn sample, 362 social network users were asked which site they primarily visited. These data are presented in the following table along with each person's age group. Age_Group Site_A Site_B Site_C 2–17 21 15 5 18–34 110 25 14 35–54 97 19 17 55+ 29 4 6 Calculate the chi-square test statistic. If necessary, combine age groups. Find the chi-square critical value. Determine the p-value using technology and interpret its meaning.
Suppose a marketing research firm would like to examine if the social networking site that a person primarily uses is influenced by his or her age. In a randomly drawn sample, 362 social network users were asked which site they primarily visited. These data are presented in the following table along with each person's age group. Age_Group Site_A Site_B Site_C 2–17 21 15 5 18–34 110 25 14 35–54 97 19 17 55+ 29 4 6 Calculate the chi-square test statistic. If necessary, combine age groups. Find the chi-square critical value. Determine the p-value using technology and interpret its meaning.
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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Suppose a marketing research firm would like to examine if the social networking site that a person primarily uses is influenced by his or her age. In a randomly drawn sample, 362 social network users were asked which site they primarily visited. These data are presented in the following table along with each person's age group.
| Age_Group | Site_A | Site_B | Site_C |
| 2–17 | 21 | 15 | 5 |
| 18–34 | 110 | 25 | 14 |
| 35–54 | 97 | 19 | 17 |
| 55+ | 29 | 4 | 6 |
Calculate the chi-square test statistic. If necessary, combine age groups.
Find the chi-square critical value.
Determine the p-value using technology and interpret its meaning.
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