Question
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 88 pounds. A random sample of 70 newly manufactured cables
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 88
pounds. A random sample of 70
newly manufactured cables has a mean breaking strength of 1700
pounds. Based on this sample, find a 99
%
confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then complete the table below.Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
(If necessary, consult a list of formulas.)
What is the lower limit of the 99
%
confidence interval?
What is the upper limit of the 99
%
confidence interval?
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Discrete Mathematics and Its Applications
Authors: Kenneth H. Rosen
7th edition
0073383090, 978-0073383095
