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A researcher who studies digital ethics wishes to conduct a survey to determine what proportion of...

A researcher who studies digital ethics wishes to conduct a survey to determine what proportion of college students have used cell phones to cheat on an exam. Suppose she decided to use the result of a previous study, 17%, for her provisional value for p. How many students should she include in her sample if she wants estimate to be within 0.05 with 95% confidence?

Math   Statistics-And-Probability   
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Answer #1

We have given,                  
Preliminary estimate for proportion (Known) = 0.17
Margin of error =E=0.05
Level of significance =1-0.95=0.05
Z critical value is (by using Z table) =1.96
Sample size formula is                   


=216.82  

Sample size  
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