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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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Question

Our research group is developing a chemically treated natural fiber for its
tensile strength properties. Forty pieces were tested under similar
conditions and the results showed an average tensile strength of 500.05
MPa and a standard deviation of 80.55 MPa. What is the lower bound of
the tensile strength (in MPa) at a one-sided 99% confidence level?
O 464.30
O 469.60
O 466.90
O 470.42

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