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8. Rice Chapter 7 no 7 7. Suppose that a simple random sample is used to estimate the proportion of families in a certain area that are living below the poverty level. If this proportion is roughly 15, what sample size is necessary so that the standard error of the estimate is .02? The End

8. Rice Chapter 7 no 7 7. Suppose that a simple random sample is used to estimate the proportion of families in a certain area that are living below the poverty level. If this proportion is roughly 15, what sample size is necessary so that the standard error of the estimate is .02? The End

MATLAB: An Introduction with Applications
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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X = 100. Explain this in words and in detail. 6.2. Find the standard error of the number of breakdowns per month from the sample and interpret it. 6.3. Find the standard error of the proportion of breakdowns per month from the sample. 7. Rice Exercise Chapter 7 No 4 4. Two populations are surveyed with simple random samples. A sample of size n₁ is used for population I, which has a population standard deviation a,; a sample of size n₂ = 2n₁ is used for population II, which has a population standard deviation 0₂ = 201. Ignoring finite population corrections, in which of the two samples would you expect the estimate of the population mean to be more accurate? Motivate by showing the calculations involved. 8. Rice Chapter 7 no 7 7. Suppose that a simple random sample is used to estimate the proportion of families in a certain area that are living below the poverty level. If this proportion is roughly .15, what sample size is necessary so that the standard error of the estimate is .02?
Transcribed Image Text:X = 100. Explain this in words and in detail. 6.2. Find the standard error of the number of breakdowns per month from the sample and interpret it. 6.3. Find the standard error of the proportion of breakdowns per month from the sample. 7. Rice Exercise Chapter 7 No 4 4. Two populations are surveyed with simple random samples. A sample of size n₁ is used for population I, which has a population standard deviation a,; a sample of size n₂ = 2n₁ is used for population II, which has a population standard deviation 0₂ = 201. Ignoring finite population corrections, in which of the two samples would you expect the estimate of the population mean to be more accurate? Motivate by showing the calculations involved. 8. Rice Chapter 7 no 7 7. Suppose that a simple random sample is used to estimate the proportion of families in a certain area that are living below the poverty level. If this proportion is roughly .15, what sample size is necessary so that the standard error of the estimate is .02?
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