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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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Q6

A sample of ultimate tensile strength observations (ksi) was taken. Use the accompanying descriptive statistics output from Minitab to calculate a 99% lower confidence bound for true average ultimate tensile strength, and interpret the result. (Round your answer
to two decimal places.)
N
Mean
153 134.43
Median TrMean St Dev
134.44 134.45 4.47
SE Mean
0.36
Minimum Maximum
124.30
149.60
Q1
131.95
Q3
137.15
ksi.
We are 99% confident that the true average ultimate tensile strength is greater than

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