« previous next »

Author Question: True or False: The expected value of a discrete probability distribution may be negative. A) True ... (Read 41 times)

Deast7027

  • Hero Member
  • *****
  • Posts: 538
on: Jul 24, 2018
True or False: The expected value of a discrete probability distribution may be negative.
 
  A) True B) False

Question 2

If nothing is known about the shape of a distribution, what percentage of the observations fall within 2 standard deviations of the mean?
 
  A) at least 75 B) at most 25
  C) approximately 95 D) approximately 5


ASDFGJLO

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Deast7027

  • Hero Member
  • *****
  • Posts: 538
Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


ASDFGJLO

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Jul 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Water potentials decrease (become more negative) as one moves from soil to plant to atmosphere Water potentials decrease (become more negative) as one moves from soil to plant to atmosphere
The small-scale distribution of different tree species in a Douglas-fir forest is determined by both The small-scale distribution of different tree species in a Douglas-fir forest is determined by both
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999 True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
Nonverbal communications convey strong, powerful messages that may be negative or positive. Nonverbal communications convey strong, powerful messages that may be negative or positive.
Positive and Negative Punishment Positive and Negative Punishment
Population distribution patterns Population distribution patterns
Video: Coronary Heart Disease

For a complete list of videos, visit our video library