« previous next »

Author Question: The standard deviation of a standard normal distribution a. is always equal to zero. b. is always ... (Read 73 times)

olgavictoria

  • Hero Member
  • *****
  • Posts: 528
on: Aug 1, 2018
The standard deviation of a standard normal distribution
 a. is always equal to zero.
  b. is always equal to one.
  c. can be any positive value.
  d. can be any value.

Question 2

Twenty-five percent of the employees of a large company are minorities. A random sample of 7 employees is selected.
 a. What is the probability that the sample contains exactly 4 minorities?
  b. What is the probability that the sample contains fewer than 2 minorities?
  c. What is the probability that the sample contains exactly 1 non-minority?
  d. What is the expected number of minorities in the sample?
  e. What is the variance of the minorities?


izzat

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Aug 1, 2018
Answer to Question 1

b

Answer to Question 2

a . 0.0577
b. 0.4450
c. 0.0013
d. 1.75
e. 1.3125


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Normal and mutant homeotic gene action in Arabidopsis Normal and mutant homeotic gene action in Arabidopsis
Distribution and Forms of Precipitation: Snow Distribution and Forms of Precipitation: Snow
Action of FMRP protein in normal and fragile-X cells Action of FMRP protein in normal and fragile-X cells
Clumped distribution of schooling squirrelfish Clumped distribution of schooling squirrelfish
Population distribution patterns Population distribution patterns
Video: ACTH/Cortisol (glycogenolysis, protein catabolism, lipolysis and gluconeogenesis)

For a complete list of videos, visit our video library