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Name: A tennis pro-shop strings tennis rackets for customers based on their
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Description: A tennis pro-shop strings tennis rackets for customers based on their requested string tension. Customer complaints have started coming in saying that their rackets were strung at lower tensions than they requested. To test these complaints, the pro

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter11: Data Analysis And Displays

Section: Chapter Questions

Problem 5CR

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A tennis pro-shop strings tennis rackets for customers based on their requested string tension. Customer complaints have started coming in saying that their rackets were strung at lower tensions than they requested. To test these complaints, the pro shop quality engineer secretly brought in 27 rackets and asked for them to be strung to a tension of 56 psi. The quality engineer then measured the tension of each racket on a different device and found the average tension to be 55 psi with a standard deviation of 3.5 psi. In order to conduct the test, the engineer selected a significance level of 1%. What can the quality engineer conclude from this test?

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