Random Vari X, Y both discrete and take values of 1 or 2. Probability for (X∩Y) Mathematics Assignment Help

Random Vari X, Y both discrete and take values of 1 or 2. Probability for (X∩Y) Mathematics Assignment Help. Random Vari X, Y both discrete and take values of 1 or 2. Probability for (X∩Y) Mathematics Assignment Help.

a. Find E(Y2), E(X2

 b. Find  σ2 x σy
c. Find P(X=1|Y=1), P(X=2|Y=2) (for this one I got 1/4 on both, I’m stuck
on a and b). Much help is appreciated!





















y=1 y=2
x=1 1/4 1/8
x=2 3/8 1/4

Random Vari X, Y both discrete and take values of 1 or 2. Probability for (X∩Y) Mathematics Assignment Help[supanova_question]

According to the ideal gas law, a 0.9921 mol sample of nitrogen gas in a 1.981 L Science Assignment Help

According to the ideal gas law, a 0.9921 mol sample of nitrogen gas in a 1.981 L container at 270.7 K should exert a pressure of 11.12 atm. By what percent does the pressure calculated using the van der Waals’ equation differ from the ideal pressure? For N2 gas, a = 1.390 L2atm/mol2 and b = 3.910E-2 L/mol.


 % 

Hint: % difference = 100 x (P ideal – Pvan der Waals) / P ideal

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A mixture of neon and xenon gases contains neon at a partial pressure of 473 mm Science Assignment Help

A mixture of neon and xenon gases contains neon at a partial pressure of 473 mm Hg and xenon at a partial pressure of 409 mm Hg. What is the mole fraction of each gas in the mixture?


XNe = 
XXe = 

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A mixture of xenon and nitrogen gases, at a total pressure of 790 mm Hg, contain Science Assignment Help

A mixture of xenon and nitrogen gases, at a total pressure of 790 mm Hg, contains 16.7 grams of xenon and 4.87 grams of nitrogen. What is the partial pressure of each gas in the mixture?


PXe =  mm Hg
PN2 =  mm Hg

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A sample of gas contains 0.1900 mol of CH4(g) and 0.3800 mol of O2(g) and occupi Science Assignment Help

A sample of gas contains 0.1900 mol of CH4(g) and 0.3800 mol of O2(g) and occupies a volume of 30.6 L. The following reaction takes place:


CH4(g) + 2O2(g)CO2(g) + 2H2O(g)

Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant.

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power up performance task part b Mathematics Assignment Help

A house on the land measures 45 feet by 38 feet, a wooded area covers 118 feet by 60 feet, and the front yard is 78 feet by 40. the remainder of the land is farmed. How many acres of the land is farmed? round to the nearest tenth 

it costs $0.05 per square foot to seed crops on 4 acres. the remainder of the farmland is seeded with grass for grazing animals. It costs $0.03 a square foot to seed the grass. what is the total cost to seed the farmland?

power up performance task part b Mathematics Assignment Help[supanova_question]

Help Me Please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! <3 Computer Science Assignment Help

A plain text e-mail and the same text entered into a word processing document would be about the same file sizes.
 False    True

 Phishing sites do not try steal your personal information.

 

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Help Me Please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! <3… Computer Science Assignment Help

 Disabling cookies prevents you from being the victim of a virus

   

Question 8.8. Removing a virus from your system is easily done with a reboot.

     

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Help .,…………………………………………………………….. Computer Science Assignment Help

Which of these image sizes takes the most storage space?

       
       
       

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Help Me Please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Computer Science Assignment Help

Which of the following is the most effective password?

       
       
       
       

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Random Vari X, Y both discrete and take values of 1 or 2. Probability for (X∩Y) Mathematics Assignment Help

Random Vari X, Y both discrete and take values of 1 or 2. Probability for (X∩Y) Mathematics Assignment Help