Question
Suppose X has the following probability distribution. x= -1 0 1 P(x=x) .50 .35 .15 i. Verify that this is a valid probability distribution. A:
- Suppose X has the following probability distribution.
x= -1 0 1
P(x=x) .50 .35 .15
i. Verify that this is a valid probability distribution.
A:
ii. Find the mean of X.
A:
iii. Find the variance of X.
A:
iv. Based on your answer from part (i), what is the mean of 7X + 6
A:
v. Suppose another random variable Y has a mean of -2.What is the mean of 2X + Y?
A:
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Algebra And Trigonometry (Subscription)
Authors: Michael Sullivan
9th Edition
0321830741, 9780321830746
