In a XYZ car company car saleswoman has to sell 1 car. She is provided with a very large (infinite for practical purposes) list of customers. She approaches customers sequentially according to the list. The probability that she makes a successful sale to any given customer is 0.2. She stops as soon as she sells the car. Suppose that all the customers behave independently of each other. Find the expected value and variance of the total number of customers the saleswoman has to approach. Select one: a. E(X) = 20 and V(X) = 5 b. None of these O c. E(X) = 4 and V(X) = 20 d. E(X) = 5 and V(X) = 10 O e. E(X) = 5 and V(X) = 20

In a XYZ car company car saleswoman has to sell 1 car. She is provided with a very large (infinite for practical purposes) list of customers. She approaches customers sequentially according to the list. The probability that she makes a successful sale to any given customer is 0.2. She stops as soon as she sells the car. Suppose that all the customers behave independently of each other. Find the expected value and variance of the total number of customers the saleswoman has to approach. Select one: a. E(X) = 20 and V(X) = 5 b. None of these O c. E(X) = 4 and V(X) = 20 d. E(X) = 5 and V(X) = 10 O e. E(X) = 5 and V(X) = 20

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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