Answer to Question #133991 in Statistics and Probability for Margaret

Question

You are tasked with the investigating whether fake news media platform and personal are independent. Consider the table below to help you with your task.

Celebrity .C/ Politician .P Sport Star .SS/ Total
Social Media .SM/ 1800 700 515 3015
Traditional Media TM/ 485 350 150 985
Total 2285 1050 665 4000


Question
What is the value of test statistic?
1. 4
2. 16
3. 53.26
4. 58.66
5. 62.68

Answer 1

mean1=1005

mean2=328

sd1=567.2

sd2=137.6

DF : 2

95% Confidence Interval for the Difference ( -773.221 , 2126.5544 )

T=$(mean1-mean2)/\sqrt{sd1^2/n_1+sd2^2/n_2}$

Test Statistic t =4