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Question1:3 tables listed below show "random variables" and their "probabilities." However, only one of these is actually a probability distribution.
[A]Which is it?
A
B
C
X
P(x)
5
0.1
10
15
0.2
20
0.6
0.7
1
[B] Using the correct probability distribution, find the following probabilities: P(x is exactly 15) = _____ P(x is no more than 10) = _____ P(x is more than 5) = _____ [C] Calculate the mean, variance, and standard deviation of this distribution. (Give your answers to two decimal places.) Mean µ= _____ Variance σ2= _____ Standard deviation σ = _____
Question2: In a Poisson distribution µ = 0.3 (Round your answers to 4 decimal places.) [A] What is the probability that X = 3 [B] What is the probability that X > 3
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