Two kinds of thread are being compared for strength. Fifty pieces of each type of thread are tested under similar conditions. Brand A had an average: tensile strength of 78.3 kilograms with a standard deviation of 5.6 kilograms, while brand B had an average tensile strength of 87.2 kilograms with a standard deviation of 6.3 kilograms. Construct a 99% confidence interval for the difference of the population means. (upload the picture of solution and roundoff your final answer into 5 decimal places)
Two kinds of thread are being compared for strength. Fifty pieces of each type of thread are tested under similar conditions. Brand A had an average: tensile strength of 78.3 kilograms with a standard deviation of 5.6 kilograms, while brand B had an average tensile strength of 87.2 kilograms with a standard deviation of 6.3 kilograms. Construct a 99% confidence interval for the difference of the population means. (upload the picture of solution and roundoff your final answer into 5 decimal places)
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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![Two kinds of thread are being compared for
strength. Fifty pieces of each type of thread are
tested under similar conditions. Brand A had an
average: tensile strength of 78.3 kilograms with a
standard deviation of 5.6 kilograms, while brand B
had an average tensile strength of 87.2 kilograms
with a standard deviation of 6.3 kilograms.
Construct a 99% confidence interval for the
difference of the population means.
(upload the picture of solution and roundoff
your final answer into 5 decimal places)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb9fdfc6-c561-4f5e-80c8-f39fa0eef47c%2F03b23304-6143-4c13-bf11-d3f3f1b7b169%2Fvaqkhv_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Two kinds of thread are being compared for
strength. Fifty pieces of each type of thread are
tested under similar conditions. Brand A had an
average: tensile strength of 78.3 kilograms with a
standard deviation of 5.6 kilograms, while brand B
had an average tensile strength of 87.2 kilograms
with a standard deviation of 6.3 kilograms.
Construct a 99% confidence interval for the
difference of the population means.
(upload the picture of solution and roundoff
your final answer into 5 decimal places)
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