CNN wants to determine the proportion of the population in california that takes social distancing seriously....
CNN wants to determine the proportion of the population in california that takes social distancing seriously. So they wants to have a 90% confidence interval whose length is 0.1. They pollster charges $10 dollars per respondent. How much money must they editor budget for the poll?
Homework Answers
Ans:
Confidence interval length=0.1
Margin of error=0.1/2=0.05
Minimum sample size required,n=1.645^2*0.5*(1-0.5)/0.05^2=270.60
So,budget required=10*271=2710
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CNN wants to determine the proportion of the population in
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