Answered: Plamen is a social media manager for a…

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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Plamen is a social media manager for a large company . He takes a random sample of their posts to see if there is a relationship between the time of each post and the number of times the post gets shared. Here are the outcomes and partial results of a chi-square test (expected counts appear below observed counts): Chi-square test: Time of post vs. number of shares 0-50 51 - 1 100+ Total Moming 203 77 50 330 219 7239 Afternoon11736 12 165 109.5 3619.5 Evening45 7 3 55 36.5 12 6.5 Total365 12065 550 They want to use these results to carry out a x ^ 2 test of independence. Assume that all conditions for inference were met. What are the values of the test statistic and value for their test?

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