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 108 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
Thanks for the timely response, appreciate it

TheNamesImani

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Environmental factors restricting the distribution of Chthamalus to the upper intertidal zone. Environmental factors restricting the distribution of Chthamalus to the upper intertidal zone.
Karst Distribution Karst Distribution
A typical variable cam timing control valve. The solenoid is controlled by the engine computer and ... A typical variable cam timing control valve. The solenoid is controlled by the engine computer and ...
The distribution of high-energy, nutritious biscuits was a lifeline in the first days after the 2010 The distribution of high-energy, nutritious biscuits was a lifeline in the first days after the 2010
Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are
Clumped distribution of schooling squirrelfish Clumped distribution of schooling squirrelfish
Video: Vascular tissues in a corn stem and a buttercup root

For a complete list of videos, visit our video library