Suppose the mean height in inches of all 9th grade students at one high school isestimated. The population standard deviation is 5 inches. The heights of 9randomly selected students are 66, 73, 64, 71, 69, 70, 74, 71 and 73.= Ex: 12.34Margin of error at 90% confidence level = Ex: 1.2390% confidence interval = [Ex: 12.34 Ex: 12.34][smaller value, larger value]

Given,Population standard deviation, σ = 5 inches.Sample size, n = 9 And sample is,66, 73, 64, 71,…

Answered: Suppose the mean height in inches of…

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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The age when smokers first start from previous studies is normally distributed with a population standard deviation of 1.8 years old. A survey of smokers of this generation was done to estimate the mean age. The sample of 35 smokers found that their mean starting age was 14.7 years old. Find the 95% confidence interval of the mean. Also, draw and label the distribution to support your work
Suppose the mean height in inches of all 9th-grade students at one high school is estimated. the population's standard deviation is 3 inches. the heights of eight randomly selected students are, 74, 73 61,63,68,75,65 and 63. x̅ = ? margin of error at 90% confidence level = ? 90 percent 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 10 randomly selected students are 68, 62, 68, 75, 71, 60, 69, 62, 69 and 70. x¯ = Margin of error at 95% confidence level = 95% confidence interval = [
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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 6 randomly selected students are 71, 73, 69, 72, 71 and 64. x= Margin of error at 99%= confidence level = 99% confidence interval = [smaller value, larger value]=
A sample of 20 observation is selected from a normal population, the sample mean is 2.78 and the standard deviation is 0.83. Another sample of 18 observation was selected and the mean is 2.63 with standard deviation of 0.75. Test at 0.01 level of significance. What is the computed value and decision.
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do number (d), (e), and (f) please
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