4.52On a particular test for a very large statistics class, a random sample of n = 4 students has a mean gradeX = 75 and s = 8. The grades for the entire class are known to be normally distributed. For the unknownpopulation mean of the grades, find (a) the 95% confidence interval and (b) the 99% confidence interval.Ans. (a) Approximately from 62 to 88 (b) Approximately from 52 to 98

Given that Sample size n =4 Sample mean=75 Sample standard deviation =8

Answered: 4.52 On a particular test for a very…

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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5.1 & 6.2 Question 13, 6.1.34 Part 1 of 2 Use the confidence interval to find the estimated margin of error. Then find the sample mean. HW Score: 44.29%, 15.5 of 35 O Points: 0 of 1 A store manager reports a confidence interval of (44.8,83.8) when estimating the mean price (in dollars) for the population of textbooks. The estimated margin of error is (Type an integer or a decimal.) Clear all his View an example Get more help - Q Search
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A simple random sample of size n=40 is drawn from a population. The sample mean is found to be x=120.1 and the sample standard deviation is found to be s=13.2. Construct a 99% confidence interval for the population mean. The lower bound is (Round to two decimal places as needed.)
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Q-3) Show all the steps for the problem.
A simple random sample of size n=17 is drawn from a population that is normally distributed. The sample mean is found to be x= 69 and the sample standard deviation is found to be s= 20. Construct a 95% confidence interval about the population mean. ..... The lower bound is The upper bound is

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