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For each of the following, find the constant c such that f(x) satisfies the conditions of the PMF for a random variables X. (a) f(x) = c(2/3)x, x = 1,2,... (b) f(x) = cx, x = 1,2,...,10

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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Question

For each of the following, find the constant c such that f(x) satisfies the conditions of the PMF for a random variables X.
(a) f(x) = c(2/3)x, x = 1,2,...

(b) f(x) = cx, x = 1,2,...,10

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Can I approach part a like this? See attached image. Thanks.

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Follow-up Question

Can I approach part a like this? See attached image. Thanks.

Solution

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