Suppose that X₁, X2, X3 are mutually independent random variables with the respective moment generating functions, Mx, (t) = est¹², Mx₂(t) = e²t + 3t², and Mx, (t) = (-)². a) Calculate the probability that X₂ is between 2 and 4, P (2 < X₂ < 4). State with parameter(s) the probability distribution of Y = X₁ + X₂. b)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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Suppose that X₁, X₁, X3 are mutually independent random variables with the respective moment
generating functions, Mx₂(t) = e²¹², Mx₂(t) :
1 = µ2t + 3t², and Mx₂ (t) = (--)².
1-2t,
a) Calculate the probability that X₂ is between 2 and 4, P(2 < X₂ < 4).
b) State with parameter(s) the probability distribution of Y = X₁ + X₂.
Find the mean and variance of the statistic y, if
c)
i) Y = Σ=1X.
d)
e)
4X₁²
X3
if Y = X₁² + X3, what is the probability that Y is at most 12.833?
ii) Y =
Find the value of τ such that P(Y > t)
T
= 0.005, for Y =
2X₁
√X3
Transcribed Image Text:Suppose that X₁, X₁, X3 are mutually independent random variables with the respective moment generating functions, Mx₂(t) = e²¹², Mx₂(t) : 1 = µ2t + 3t², and Mx₂ (t) = (--)². 1-2t, a) Calculate the probability that X₂ is between 2 and 4, P(2 < X₂ < 4). b) State with parameter(s) the probability distribution of Y = X₁ + X₂. Find the mean and variance of the statistic y, if c) i) Y = Σ=1X. d) e) 4X₁² X3 if Y = X₁² + X3, what is the probability that Y is at most 12.833? ii) Y = Find the value of τ such that P(Y > t) T = 0.005, for Y = 2X₁ √X3
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