Population having a mean
For a population having a mean of 10 and a variance of 30, find the probability that a sample size of 9 taken at random from this population will have a mean between 8 and 13.
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A lithium salt used in lubricating grease has the formula LiCnH2n+1O2. The salt is solublein water to the extent of 0.036g per 100.0g of water at 25C. The osmotic pressure of the solution is found to be 57.1 torr.
A normal shock stands where area is 20 cm 2. What is the temperature right before the shock, and the Mach number, pressure, and temperature right after the shock.
Let S be the event that a randomly chosen male age 18-24 is Republican. Let C be the event that a randomly chosen male age 18-24 is African American. Given P(S) = 0.22, P(C) = 0.18, and P(S ? C) = 0.11, calculate the following probability: P(S U C
What is the minimum coating thickness that will minimize the reflection at the wavelength of 704 where solar cells are most efficient? Solar cells are given antireflection coatings to maximize their efficiency.
What is the mass of the water if the bath is adiabatic? What is the entropy generation of the process? Fix the irreversibility for the same changes in state and analyze your fix.
A 90-nm-thick coating is applied to the lens. What must be the coating's index of refraction to be most effective at 480 ? Assume that the coating's index of refraction is less than that of the lens.
The refrigerant leaves this evaporator as a saturated vapor, and the plant is sized to produce ice at 0°C at a rate of 2500 kg/h. Determine the rate of entropy generation in this plant.
What is the probability that you are dealt two pairs? What is the probability that you are dealt a three of a kind or 4 of a kind? Note: three of a kind means that the other 2 cards are NOT a pair.
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