Question
The random variable X has the discrete probability distribution shown as below. P(X-x) | X 0.1 | -2 0.2 | -1 0.45 | 0 n/a
The random variable X has the discrete probability distribution shown as below.
P(X-x) | X
0.1 | -2
0.2 | -1
0.45 | 0
n/a | 1
0.1 | 2
(a) Find the probability P(X-1)
(b)Find the probability P(-1 X < 1)
(c)Find the mean of X
(d) Find the variance and the standard deviation of X.
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Statistics For Business And Economics
Authors: James T. McClave, P. George Benson, Terry T Sincich
12th Edition
032182623X, 978-0134189888, 134189884, 978-0321826237
