A. Construct the confidence interval for the population mean m?=0.98, x overbar= 4.8, sigma ? =0.2,n=47A98?% confidence interval for ? is (_____,_____)B. Construct the confidence interval for the population mean m?=0.98, x overbar = 15.2, sigma ? =3.0, n=45A98?% confidence interval for ? is (_____,_____)C. Find the minimum sample size n needed to estimate m? for the given values of? c=0.98, sigma? ? =5.7,E =1. Assume that a preliminary sample has at least 30 members.N=____People were polled on how many books they read the previous year. How many subjects are needed to estimate the number of books read the previous year within one book with90?% ?confidence? Initial survey results indicate that sigma ?=11.1 books.A 90% confidence level requires _______ subjectsD. A doctor wants to estimate the HDL cholesterol of all? 20- to? 29-year-old females. How many subjects are needed to estimate the HDL cholesterol within2 points with 99% confidence assuming sigma ?=10.1? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size? required?A 90% confidence level requires _______ subjects

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