Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 10 Oct 2017 My Price 4.00

past experience

55.    From past experience, a professor knows that the test score of a student taking her final examination is a random variable with mean 75.

(a)      Give an upper bound to the probability that a student’s test score will exceed 85.

Suppose in addition the professor knows that the variance of a student’s test score is equal to 25.

(b)      What can be said about the probability that a student will score  between    65 and 85?

(c)      How many students would have to take the examination so as to ensure, with probability at least .9, that the class average would be within 5 of 75?

 

Answers

Maurice Tutor
(5)
Status NEW Posted 10 Oct 2017 05:10 PM My Price 4.00

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