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Among a simple random sample of 322 American adults who do not have a four-year college...

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Basic Math

Among a simple random sample of 322 American adults who do nothave a four-year college degree and are not currently enrolled inschool, 145 said they decided not to go to college because theycould not afford school.

1. Calculate a 99% confidence interval for the proportion ofAmericans who decide to not go to college because they cannotafford it, and interpret the interval in context. Round to 4decimal places.

( , )

2. Suppose we wanted the margin of error for the 99% confidencelevel to be about 3.25%. What is the smallest sample size we couldtake to achieve this? Note: For consistency's sake, round your z*value to 3 decimal places before calculating the necessary samplesize.

Choose n =

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