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Examine the hospital database. Suppose you want to "prove" that the average hospital in the United States averages more than 700 births per year. Use the hospital database as your sample and test this hypothesis. Let alpha be .01. On average, do hospitals in the United States employ fewer than 900 per- sonnel? Use the hospital database as your sample and an alpha of .10 to test this figure as the alternative hypothesis. Assume that the number of births and number of employees in the hospitals are normally distributed in the population.
There are two thermal reservoirs: the hot reservoir is at 1200 K and the cold reservoir is at 600 K. If you wanted to transfer 100 kJ from on reservoir to the other, what would the change in entropy of the two reservoirs be?
a 500-hp hydroelectric plant generates power using water at a rate of 1000 ft2min with an overall efficiency of 35.
Consider an ideal Rankine cycle with a single open feed water heater. The boiler pressure is 800 psia, and the condenser pressure is 2 psia. Steam is extracted from the turbine to heat the feed water at 90 psia. Steam enters the turbine at 1000F.
Strains measured as the bar was pulled in tension were used to compute Young's modulus. Readings from one gauge gave a modulus much higher than those from the other gauge. What was the probable cause of this discrepancy?
NaCl crystals slip on {110} slip systems. There are six systems of this type. Consider a crystal subjected to uniaxial compression parallel to z = [110].
calculate the nusselt number and the convective heat transfer coefficient for water at a bulk temperature of 32oc
A temperature measuring device with a time constant of 0.15 s outputs a voltage that is linearly proportional to temperature. The device is used to measure an input signal of the form T(t) = 115 + 12 sin 2t, in °C.
2.49 kg of R-134a refrigerant fill a .26098 m^3 rigid container at an initial temperature of -26°C. The container is then heated until the pressure is 200 kPa. Determine (a) the final temperature and (b) the initial pressure.
in a compton experiment an electron attains a kinetic energy of 0.1 mev when a 0.5mev x-ray strikes it. determine the
Some alloys use a combination of strain hardening and precipitation hardening to achieve particularly high strength levels. The usual order of strengthening is solution treatment,quenching, cold working, and finally precipitation heat treatment. Why ..
a 4 m3 storage tank containing 2 m3 of liquid is about to be pressurized with air from a large high-pressure reservoir
Show how did you do the maintenance during your workshop
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