The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 97 pounds. A random sampleof 90 newly manufactured cables has a mean breaking strength of 1750 pounds. Based on this sample, find a 90% confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 97 pounds. A random sampleof 90 newly manufactured cables has a mean breaking strength of 1750 pounds. Based on this sample, find a 90% confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)
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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Question
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of
97
pounds. A random sampleof
90
newly manufactured cables has a mean breaking strength of
1750
pounds. Based on this sample, find a
90%
confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then give its lower limit and upper limit.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)
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