« previous next »

Author Question: Suppose a household is chosen at random and the random variable x is the number of cars they own. ... (Read 105 times)

crobinson2013

  • Hero Member
  • *****
  • Posts: 535
on: Jun 24, 2018

  Suppose a household is chosen at random and the random variable x is the number of cars they own. The probability distribution of x is as follows:
 
  What is the expected value of x, the average number of televisions per household?
   
 

  a.2
  b.2.5
  c.0.25
  d.1.95

Question 2


 

Suppose Y = the number of years that a person has worked for one company from a randomly selected person in the work force. Given the following values of the cumulative distribution function (CDF), what is the ?
  CDF: FY(2) = 0.05, FY(4) = 0.15, FY(6) = 0.45, FY(8) = 0.60, FY(10) = 0.75, FY(12) = 0.95


 

  a.
 

b. = F(10) - F(2) = 0.75 - 0.05 = 0.70
 


  c.
  d.


Zebsrer

  • Sr. Member
  • ****
  • Posts: 284
Reply #1 on: Jun 24, 2018
Answer to Question 1

correct: d

Answer to Question 2

correct: b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

An example of a homeostatically controlled variable: blood levels of glucose in a human. An example of a homeostatically controlled variable: blood levels of glucose in a human.
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
A greater number of men than women hold full-time jobs, but the gap is closing because of an ... A greater number of men than women hold full-time jobs, but the gap is closing because of an ...
The number of research articles published on the topic of religious practices and spirituality have ... The number of research articles published on the topic of religious practices and spirituality have ...
Schematic representations of (a) random, (b) alternating, (c) block, and (d) graft copolymers. Schematic representations of (a) random, (b) alternating, (c) block, and (d) graft copolymers.
Number Facts Number Facts
Video: Brief Summary on Photosynthesis - Animation

For a complete list of videos, visit our video library