For this problem, carry at least four digits after the decimal in your calculations.A random sample of medical files used to estimate the proportion p of all people who have blood type B.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 92% sure that the point estimate p will be within a distance of 0.03 from p?Find the critical value for 92% confidence level, Zo.92, and find the specified maximal error of estimate, E. (Round your answers to two decimal places.)²0.92 =E =Compute the minimal sample size n for estimating the proportion p of all people who have blood type B under these restrictions. (Round your answer to a whole number.)medical files(b) Answer part (a) only this time use the preliminary estimate that about 14 out of 82 people have blood type B. (Round your proportions to three decimal places and your minimum sample size to awhole number.)q=n =medical files

A random sample of medical files is used to estimate the proportion p of all people who have blood…

Answered: (a) If you have no preliminary estimate…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and o=11.6. Assume the population is normally distributed. A 95% confidence level requires a sample size of (Round up to the nearest whole number as needed.) O
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s=17.8 based on earlier studies? Suppose the doctor would be content with 99% confidence. How does the decrease in confidence affect the sample size required? a. A 99% confidence level requires _______ subject. b. 90% confidence level requires ________ subject. c.How does the decrease in confidence affect the sample size required? a.Decreasing the confidence level decreases the sample size needed. b.Decreasing the confidence level increases the sample size needed. c.The sample size is the same for all levels of confidence.
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