Thirty-three percent of primary care doctors think their patients receive unnecessary medical care. If required, round your answer to four decimal places.
(a) Suppose a sample of 300 primary care doctors was taken. Calculate the mean and standad deviation of the sample proportion of doctors who think their patients receive unnecessary medical care.
np=
n(1-p) =
E(p) =
στ
☑
(b) Suppose a sample of 500 primary care doctors was taken. Calculate the mean and standard deviation of the sample proportion of doctors who think their patients receive unnecessary medical care.
np =
n(1-p) =
E(p) =
στ
☑
(c) Suppose a sample of 1,000 primary care doctors was taken. Calculate the mean and standard deviation of the sample proportion of doctors who think their patients receive unnecessary medical care.
☑
np =
☑
n(1-p) =
☑
E(p) =
☑