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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![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. EIX) = 20 and V(X) = 5
b. None of these
O c. E(X) = 4 and V(X) = 20
d. EIX) = 5 and V(X) = 10
O e. E(X) = 5 and V(X) = 20
The correct answer is: E(X) = 5 and V(X) = 20](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F19fb1767-2839-4cf7-b9a3-72aa9c970805%2F871dda6c-b09f-4cb1-b550-ce568d713e7f%2F7ajudf_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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. EIX) = 20 and V(X) = 5
b. None of these
O c. E(X) = 4 and V(X) = 20
d. EIX) = 5 and V(X) = 10
O e. E(X) = 5 and V(X) = 20
The correct answer is: E(X) = 5 and V(X) = 20
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