A synthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. How is the standard deviation of the sample mean changed when the sample size is increased from n = 12 to n = 48? Round all intermediate calculations to four decimal places (e.g. 12.3456) and round the final answer to three decimal places (e.g. 98.768). The standard deviation is reduced by i psi.
A synthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. How is the standard deviation of the sample mean changed when the sample size is increased from n = 12 to n = 48? Round all intermediate calculations to four decimal places (e.g. 12.3456) and round the final answer to three decimal places (e.g. 98.768). The standard deviation is reduced by i psi.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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![A synthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard
deviation 3.5 psi. How is the standard deviation of the sample mean changed when the sample size is increased from n = 12 to
n = 48?
Round all intermediate calculations to four decimal places (e.g. 12.3456) and round the final answer to three decimal places (e.g.
98.768).
The standard deviation is reduced
by i
psi.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F88cb4487-ac5e-414a-a7e3-ce8b9690d678%2Fe1cfd16b-2cbe-4941-b0f3-b0e70760f88b%2Fwoyye8i_processed.png&w=3840&q=75)
Transcribed Image Text:A synthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard
deviation 3.5 psi. How is the standard deviation of the sample mean changed when the sample size is increased from n = 12 to
n = 48?
Round all intermediate calculations to four decimal places (e.g. 12.3456) and round the final answer to three decimal places (e.g.
98.768).
The standard deviation is reduced
by i
psi.
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