A random sample of 20 students obtained a mean of x = 72 and a variance of

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A random sample of 20 students obtained a mean of x = 72 and a variance of s~ = 16 on a college placement, test in mathematics. Assuming the scores to be normally distributed, construct a 98% confidence interval for σ².

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Fundamentals of Aerodynamics

ISBN: 978-0070016798

2nd Edition

Authors: J. Anderson

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Question Posted: Feb 04, 2011 06:47 AM

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A random sample of 20 students obtained a mean of x = 72 and a variance of

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s 16 with v 19 degrees ...View the full answer

Fundamentals of Aerodynamics

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