7) The state education commission wants to estimate the proportion of tenth grade students that have reading skills at or below the eighth-grade level. How large a sample would be required to estimate the proportion of tenth graders reading at or below the eighth-grade level using 90% confidence level with a margin of error of 0.05 if: a) p 0.10 from an earlier study b) no estimate of p is available

7) The state education commission wants to estimate the proportion of tenth grade students that have reading skills at or below the eighth-grade level. How large a sample would be required to estimate the proportion of tenth graders reading at or below the eighth-grade level using 90% confidence level with a margin of error of 0.05 if: a) p 0.10 from an earlier study b) no estimate of p is available

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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Among various ethnic groups, the population standard deviation of heights is unknown. We wish to construct a 95% confidence interval for the average height of men from a certain region. Forty-eight men from this region are surveyed. The sample mean is 71 inches and the sample standard deviation is 3 inches. A.) Construct a 95% confidence interval for the population mean height of men from this region. B.) Provide an interpretation for your interval.
What is the corresponding significance level for a confidence level of 99%? A 1 B) 0.1 0.01 D) 0.05
If a sample is used to estimate a population proportion p. What is the the margin of error M.E. that corresponds to a sample of size 151 with 53% successes at a confidence level of 99.9
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