Primary Care Doctors Probability

Question

According to Reader's Digest,  39% of primary care doctors think their patients receive unnecessary medical care. Use z-table.

a. Suppose a sample of 380 primary care doctors was taken. Show the sampling distribution of the proportion of the doctors who think their patients receive unnecessary medical care.

E(p(line above "p"))=

Op=  (to 4 decimals)

b. What is the probability that the sample proportion will be within +or- 0.03  of the population proportion. Round your answer to four decimals.

c. What is the probability that the sample proportion will be within +or- 0.05  of the population proportion. Round your answer to four decimals.

d. What would be the effect of taking a larger sample on the probabilities in parts (b) and (c)? Why?

The probabilities would - Select your answer -increase or decrease. This is because the increase in the sample size makes the standard error,  , - Select your answer -larger or smaller

Answer 1