Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
QUESTION
If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p̂ will be within a distance of 0.04 from p? Ans
If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p̂ will be within a distance of 0.04 from p? Answer part (a) if you use the preliminary estimate that about 9 out of 90 people have blood type B. (Round your answer up to the nearest whole number.)
