In a sample of 331 Americans, 15% decided to not go to college do so because...

In a sample of 331 Americans, 15% decided to not go to college do so because they cannot afford it.

(a) Suppose we wanted the margin of error for the 90% confidence level to be at most 1.5%. How large of a survey would you recommend? (Do not use the estimate of p given by the sample.)

(b) Suppose we wanted the margin of error for the 90% confidence level to be at most 1.5%. How large of a survey would you recommend? (Now make the estimate that p≈0.15 .)

Solutions

Expert Solution

( a )

sample size is n = 3007

( b )

sample size is n = 1534

orchestra answered 1 year ago

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