students. The sample mean x is 17.3 years and the population standard deviation is 3. Give the 99%A sample of 60 Grade 12 students' ages was obtained to estimate the mean age of all Grade 12confidence interval for population mean u.old

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Answered: 4. A sample of 60 Grade 12 students'…

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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An SRS of 29 students at HCC gave an average height of 5.5 feet and a standard deviation of .1 feet. Construct a 90% confidence interval for the mean height of students at HCC.
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 4 inches. The heights of 6 randomly selected students are 69, 62, 68, 64, 61 and 68. x¯ = Margin of error at 99% confidence level = 99% confidence interval = [ , ]
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The heights of 7 randomly selected students are 72, 61, 74, 68, 64, 66 and 64. x¯ = Margin of error at 95% confidence level = 95% confidence interval = [ , ]
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4. A sample of 60 Grade 12 students' ages was obtained to estimate the mean ase of all Grade 12 confidence interval for population mean students. The sample mean x is 17.3 years and the pgnulu old er