The grades from a statistics class for the first test are given by (a) Find mean

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The grades from a statistics class for the first test are given by
65 87 49 77 56 74 96 3 99 84 15 p(x) 15 15 15 15 15 15 15 15 15 15 8-12 CO

(a) Find mean μ and variance σ2.
(b) Find the mgf.

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Mathematical Statistics With Applications In R

ISBN: 9780124171138

2nd Edition

Authors: Chris P. Tsokos, K.M. Ramachandran

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