Consider a population having a standard deviation equal to 9.70. We wish to estimate the mean of this population. (a) How large a random sample is needed to construct a 95 percent confidence interval for the mean of this population with a margin of error equal to 1? (Round your answer to the next whole number.) The random sample is units (b) Suppose that we now take a random sample of the size we have determined in part a. If we obtain a sample mean equal to 284, calculate the 95 percent confidence interval for the population mean. What is the interval's margin of error? (Round your answers to the nearest whole number.) The 95 percent confidence interval is Margin of error

Consider a population having a standard deviation equal to 9.70. We wish to estimate the mean of this population. (a) How large a random sample is needed to construct a 95 percent confidence interval for the mean of this population with a margin of error equal to 1? (Round your answer to the next whole number.) The random sample is units (b) Suppose that we now take a random sample of the size we have determined in part a. If we obtain a sample mean equal to 284, calculate the 95 percent confidence interval for the population mean. What is the interval's margin of error? (Round your answers to the nearest whole number.) The 95 percent confidence interval is Margin of error

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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Estimation

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Question

Consider a population having a standard deviation equal to 9.70. We wish to estimate the mean of this population.
(a) How large a random sample is needed to construct a 95 percent confidence interval for the mean of this population with a margin
of error equal to 1? (Round your answer to the next whole number.)
The random sample is
units.
(b) Suppose that we now take a random sample of the size we have determined in part a. If we obtain a sample mean equal to 284,
calculate the 95 percent confidence interval for the population mean. What is the interval's margin of error? (Round your answers to
the nearest whole number.)
The 95 percent confidence interval is
Margin of error

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