(1 point) Is college worth it? Among a simple random sample of 318 American adults who do not have a four-year college d
Posted: Wed May 11, 2022 5:58 am
(1 point) Is college worth it? Among
a simple random sample of 318 American adults who do not have a
four-year college degree and are not currently enrolled in school,
153 said they decided not to go to college because they could not
afford school.
1. Calculate a 99% confidence interval for the proportion of
Americans who decide to not go to college because they cannot
afford it, and interpret the interval in context. Round to 4
decimal places.
( , )
2. Suppose we wanted the margin of error for the 99% confidence
level to be about 2%. What is the smallest sample size we could
take to achieve this? Note: For consistency's sake, round your z*
value to 3 decimal places before calculating the necessary sample
size.
Choose n =
a simple random sample of 318 American adults who do not have a
four-year college degree and are not currently enrolled in school,
153 said they decided not to go to college because they could not
afford school.
1. Calculate a 99% confidence interval for the proportion of
Americans who decide to not go to college because they cannot
afford it, and interpret the interval in context. Round to 4
decimal places.
( , )
2. Suppose we wanted the margin of error for the 99% confidence
level to be about 2%. What is the smallest sample size we could
take to achieve this? Note: For consistency's sake, round your z*
value to 3 decimal places before calculating the necessary sample
size.
Choose n =