A researcher found a 95% confidence interval for the proportion of college students who believe in...
A researcher found a 95% confidence interval for the proportion of college students who believe in ghosts.
The interval was (0.6525, 0.7535). What is the margin of error for this estimate?
Homework Answers
Solution :
Point estimate = 
= (Lower confidence interval + Upper confidence interval ) / 2
Point estimate =
= (0.6525+0.7535)./ 2=0.703
Margin of error = E = Upper confidence interval -
= 0.7535-0.703=0.0505
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