Grades from a statistics class

Reference no: EM13963692

The grades from a statistics class for the ?rst test are given by

xi	96	87	65	49	77	74	99	68	56	84
p (xi)	3/15	2/15	1/15	1/15	2/15	1/15	1/15	1/15	1/15	2/15

(a) Find mean μ and variance σ2.

(b) Find the mgf.

Reference no: EM13963692

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