SOLUTION: A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. Determine a 80 % confidence interval for the population pr

Question 1075091: A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. Determine a 80 % confidence interval for the population proportion of college seniors who plan to attend graduate school. (Enter each answer rounded to three decimal places.)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
The interval is z* sqrt {(.2*.8)/100}, where z=+/-1.28
That is +/-0.051
The point estimate is 0.2, and that goes in front of the interval
The interval is (0.149, 0.251)
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