A random sample of medical files is used to estimate the proportion p of all people who have blood type B. A USE 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 85% sure that the point estimate p will be within a distance of 0.07 from p? (Round your answer up to the nearest whole number.) | medical files (b) Answer part (a) if you use the preliminary estimate that about 13 out of 90 people have blood type B. medical files

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.