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and not 7. The measurements of the drying time, in hours, of a certain brand of latex paint follow a normal distribution. Suppose 20 mcasurements of the drying times are recorded. The Isample mean and the standard deviation of 20 mcasurenents is 3.77 and 0.946, respec- tively. (a) Construct a 90% confidlence interval for the true ncan measurements of the drying times. Assune that the distribution of the measuremcnts of the drying times is approximately normal. (b) Find the 95% confidence interval for the standard deviation of mcasurements of the drying times.

and not 7. The measurements of the drying time, in hours, of a certain brand of latex paint follow a normal distribution. Suppose 20 mcasurements of the drying times are recorded. The Isample mean and the standard deviation of 20 mcasurenents is 3.77 and 0.946, respec- tively. (a) Construct a 90% confidlence interval for the true ncan measurements of the drying times. Assune that the distribution of the measuremcnts of the drying times is approximately normal. (b) Find the 95% confidence interval for the standard deviation of mcasurements of the drying times.

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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and not 7. The measurements of the drying time, in hours, of a certain brand of latex paint follow a normal distribution. Suppose 20 mcasurements of the drying times are recorded. The Isample mean and the standard deviation of 20 mcasurements is 3.77 and 0.946, respec- tively. (a) Construct a 90% confidence interval for the true ncan measurements of the drying times. Assume that the distribution of the measurements of the drying times is approximately normal. (b) Find the 95% confidence interval for the standard deviation of measurements of the drying times.
Transcribed Image Text:and not 7. The measurements of the drying time, in hours, of a certain brand of latex paint follow a normal distribution. Suppose 20 mcasurements of the drying times are recorded. The Isample mean and the standard deviation of 20 mcasurements is 3.77 and 0.946, respec- tively. (a) Construct a 90% confidence interval for the true ncan measurements of the drying times. Assume that the distribution of the measurements of the drying times is approximately normal. (b) Find the 95% confidence interval for the standard deviation of measurements of the drying times.
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