A random sample of medical files is used to estimate the

Last updated: 2/8/2024

A random sample of medical files is used to estimate the proportion p of all people who have blood type B LUSE SALT a If you have no preliminary estimate for p how many medical files should you include in a random sample in order to be 850 sure that the point estimate p will be within a distance of 0 06 from p X medical files b Answer part a if you use the preliminary estimate that about 8 out of 90 people have blood type B Round your answer u to the nearest whole number