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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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
Transcribed Image Text:Suppose X₁ is a random variable which takes values (x₁,x) and X₂ is a random
variable which takes values (x,x). Below is the table with values for joint probability
P(X1, X2):
x2 0.3 0.1
x2
0.4 0.2
which of the following statements is correct?
A: P(X₁ = x₁, X₂ = x₂) = 0.3, B: P(X₁ = x₁) = 0.4, C: P(X₂ = x₂) = 0.2.
Consider a coin experiment, where out of 10 trials, 3 successes were observed. Suppose
that the Beta-Binomial model (with a uniform prior) was selected to fit the data. Which
of the below is TRUE?
Hint: Recall that the Probability Mass Function (PMF) for the Binomial distribution
is P(x = k)
n!
(n- -k)!k!!
Beta distribution is F-1 (1-0)³–¹1)
T(a+B)
T(a)r (3)
=
0k (1 – 0)n—k, and the Probability Density Function (PDF) for the
A: posterior p(x) ∞ Beta(4,8)
B: posterior p(x) x Beta(12,5)
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