Maurice Tutor

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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 12 Nov 2017 My Price 4.00

variance of the marks

After many years of teaching, a statistics professor computed the variance of the marks on her final exam and found it to be ?2 = 250. She recently made changes to the way in which the final exam is marked and wondered whether this would result in a reduction in the variance. A random sample of this year?s final exam marks are listed here. Can the professor infer at the 10% significance level that the variance has decreased? 57 92 99 73 62 64 75 70 88 60

Answers

Maurice Tutor
(5)
Status NEW Posted 12 Nov 2017 12:11 PM My Price 4.00

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