Discrete random variables
Let X and Y be two discrete random variables. Suppose X ? Y . Prove that E[X] ? E[Y ]. Note that you have not been given any information about the equations for the pmf's of X and Y.
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Though, the superconductivity is destroyed when the magnetic field at the surface of the metal reaches or surpasses 0.10 T. Determine the maximum current in a straight, 3.2 mm diameter super-conducting niobium wire?
A continuous random variable X has a density of the form f(x) = Ce ^ - abs(x), defined on all of R. Find C
Determine the largest amount of La3+ which can be added without causing the precipitation? If 1.00 mM La3+ is added to a solution and the equilibrium pH is7.0, will solid La(OH)3 precipitate.
Find dimensions of box which has maximum volume that can be created from the sheet of cardboard? Determine the maximum volume?
Find out the concentrations of dissolved F- and La3+ are in equilibrium with solid LaF3 when the sensing element of a fluoride electrode is made of lanthanum trifluoride, LaF3.
Suppose the rope and pulley are mass-less and there is no friction in the pulley. If the masses are of 19.9 kg, compute their acceleration ‘a’ and the tension in the rope, T. Use g = 9.81 m/s^2
In a research study using a sample of 30 participants, the Pearson r correlation between X ans Y is +0.09 and is not statistically significant.
Explain why the 4s, 4p do, 4d, and 4f orbital have the same energy in hydrogen atom but they have different energies in many electron atoms?
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