This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A random variable x has the following probability distribution: x f(x) 0 0.08 1 0.17 2 0.45 3 0.25 4 ... (Read 112 times)

stephzh

  • Hero Member
  • *****
  • Posts: 556
on: Jun 24, 2018
A random variable x has the following probability distribution: x f(x) 0 0.08 1 0.17 2 0.45 3 0.25 4 0.05
 a. Determine the expected value of x.
  b. Determine the variance.

Question 2

For a sample size of 21 at 95 confidence, the chi-square values needed for interval estimation are
 a. 9.591 and 34.170.
  b. 2.700 and 19.023.
  c. 8.260 and 37.566.
  d. 10.283 and 35.479.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

chinwesucks

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. 2.02
b. 0.9396

Answer to Question 2

a


stephzh

  • Member
  • Posts: 556
Reply 2 on: Jun 24, 2018
Excellent

FergA

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Distribution and Forms of Precipitation: Freezing Rain Distribution and Forms of Precipitation: Freezing Rain
Percentage distribution of outcomes of teenaged pregnancy Percentage distribution of outcomes of teenaged pregnancy
Variable and absorption costing, explaining operating-income differences. Variable and absorption costing, explaining operating-income differences.
Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr
Random distribution of dandelions Random distribution of dandelions
The frequency distribution of the allele in Africa, Southern Europe, the Middle East The frequency distribution of the allele in Africa, Southern Europe, the Middle East
Video: Second Messengers in the Inositol-lipid Signaling Pathway

For a complete list of videos, visit our video library