Suppose tat the life length of a certain kind of light bulb, after it is installed is exponentially distributed with mean life of 10 days. Let X,, X, + a) E[S50] ,X, be i.i.d. Let S50 ..... +X50- Find b) Var(S50)
Suppose tat the life length of a certain kind of light bulb, after it is installed is exponentially distributed with mean life of 10 days. Let X,, X, + a) E[S50] ,X, be i.i.d. Let S50 ..... +X50- Find b) Var(S50)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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please use the pictures below.
![3. Suppose that the life length of a certain kind of light bulb, after it is installed is
exponentially distributed with mean life of 10 days. Let X,,
X, +
X. be i.i.d. Let S0
+Xe. Find
a) E[S30]
b) Var(S50)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F87b977f8-e536-4be1-9c8d-1b53502ad1ed%2F0c10a448-6fed-4fdc-a566-dcf2b410440c%2Fz0h1r5p_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3. Suppose that the life length of a certain kind of light bulb, after it is installed is
exponentially distributed with mean life of 10 days. Let X,,
X, +
X. be i.i.d. Let S0
+Xe. Find
a) E[S30]
b) Var(S50)
![3. Suppose that the life length of a certain kind of light bulb, after it is installed is
exponentially distributed with mean life of 10 days. Let X,,
X, +
X. be i.i.d. Let S0
+Xe. Find
a) E[S30]
b) Var(S50)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F87b977f8-e536-4be1-9c8d-1b53502ad1ed%2F0c10a448-6fed-4fdc-a566-dcf2b410440c%2Fuembs4r_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3. Suppose that the life length of a certain kind of light bulb, after it is installed is
exponentially distributed with mean life of 10 days. Let X,,
X, +
X. be i.i.d. Let S0
+Xe. Find
a) E[S30]
b) Var(S50)
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