Positive random variable
Suppose x is a positive random variable with E[X]=5.3 and standard deviation of x is 1.6 . find:
a) E[3-2x]
b) Var(x)
c) E[x^2]
d) e[(X-2)^2]
e) Var(-3x+4)
Expected delivery within 24 Hours
Five kilograms of saturated water vapor is contained in a closed rigid tank at an initial pressure of 4 MPa. The pressure of the water drops to 2 MPa as a result of heat transfer to the surroundings.
If a group of 40 males had a mean of 7 and a standard deviation of 2.5, while a group of 35 females had a mean of 5 and a standard deviation of 1.4, the standard error of the difference between the means would be approximately
You arrive to a trolly stop, just missing the last trolly. The time until the next rolly arrival is modeled as a U(4,6) random variable. You decide that you will walk to your destination (and not use the trolly) if the next trolly takes longer tha
A 15.0-V battery is connected to a capacitor, resulting in 55.0 µC of charge stored on the capacitor. How much energy is stored in the capacitor?
A steam engine consists of a boiler connected to a turbine. The boiler tank has a volume of 100 L and initially contains saturated liquid with a very small amount of vapor at 100 kPa
A notebook computer wire carries 1.5 A. How many electrons pass through the wire each second?
A rigid, high-pressure tank has a volume of 3.8ft3 and containss nitrogen at 185 psia and at 290 F. A small leak develops in a valve connected to the tank, and the mass flow rate through the leak is 2e-5 lbm/s.
Show the estimated regression equation. Compute the coefficient of determination and comment on the strength of the regression relationship.
1958462
Questions Asked
3,689
Active Tutors
1446435
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Question: Which of the following traits characterizes gymnosperms?
Complete the Punnett square for the first generation of offspring of these parents. Drag the alleles and genotypes to the correct locations.
Problem: Which statement correctly describes macromolecules? A Nitrogen is essential for carbohydrate formation. B Lipids are water-loving molecules
Which of the following traits characterizes gymnosperms? The gametophyte is the longest phase of the life cycle.
Question: Plants removing pollutants from the atmosphere is an example of which type of ecosystem service?
Question: Which of the following structures conducts the most exchange of oxygen and carbon dioxide in the bloodstream?
Question: All of the following statements accurately describe the position of the kidneys except?