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You measure 20 textbooks" weights, and find they have a mean weight of 60 ounces. Assume the population standard deviation is 12.1 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places

You measure 20 textbooks" weights, and find they have a mean weight of 60 ounces. Assume the population standard deviation is 12.1 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places

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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You measure 20 textbooks' weights, and find they have a mean weight of 60 ounces. Assume the population standard deviation is 12.1 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places
Transcribed Image Text:You measure 20 textbooks' weights, and find they have a mean weight of 60 ounces. Assume the population standard deviation is 12.1 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places
Assume that a sample is used to estimate a population mean pi. Find the margin of error M.E. that corresponds to a sample of size 9 with a mean of 34.6 and a standard deviation of 7.4 at a confidence level of 99.8%. Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. M.E. = Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
Transcribed Image Text:Assume that a sample is used to estimate a population mean pi. Find the margin of error M.E. that corresponds to a sample of size 9 with a mean of 34.6 and a standard deviation of 7.4 at a confidence level of 99.8%. Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. M.E. = Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
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