p³(1 − p)−3 k₁< k2 < k3; [p³ - Pk(k) = k₁ € {1,2...}, otherwise.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A wireless data terminal has three messages waiting for transmission. After sending a message, it expects an acknowledgement from the receiver. When it receives the acknowledgment, it transmits the next message. If the acknowledgment does not arrive, it sends the message again. The possibility of successful transmission of a message is 'p' independent of other transmissions. Let K = [K1 K2 K3]^T be the three dimensional random vector in which Ki the phone ring is the total number of transmissions when a message i is received successfully. The PMF for the number of transmissions when message i is received successfully is below. For p=0.8, find the expected value vector E[K], the covariance matrix CK, and the correlation matrix RK.

p³(1 − p)−3 k₁< k2 < k3;
[p³ -
Pk(k) =
k₁ € {1,2...},
otherwise.
Transcribed Image Text:p³(1 − p)−3 k₁< k2 < k3; [p³ - Pk(k) = k₁ € {1,2...}, otherwise.
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