Manufacturing of semiconductor chips
1) The manufacturing of semiconductor chips produces 2% defective chips. Assume the chips are independent and that a lot contains 1000 chips.
(Round your answers to 4 decimal places.)
Approximate the probability that more than 25 are defective. =
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An air conditioner provides 1 Kg/s of air at 15 C cooled from outside atmospheric air at 35 C. Estimate the amount of power needed to operate the air conditioner. Clearly state all assumptions made.
The time for a professor to grade an exam is normally distributed with a mean of 12.6 minutes and a standard deviation of 2.2 minutes. The interval around the mean that contains 95% of the times needed to grade exams is
It is estimated that 56% of the children between the ages of 3 and 5 years are already enrolled in school. In a sample of 350 children what is the probability that at least half are enrolled in school?
What is the smallest motor you would need for a heat pump absorbing heat from the container and rejecting heat to the room at 20 C?
The manufacturing of semiconductor chips produces 2% defective chips. Assume the chips are independent and that a lot contains 1000 chips.
Heat transfer by radiation, conduction, and convection with the ambient surroundings thus cycles the water temperature. Is such a cyclic process reversible or irreversible?
Consider two independent variables X and Y, where X is uniformly distributed on the interval [-1,1] and Y is exponentially distributed with mean 3. Find the joint density function for the pair (X, Y).
Consider a thin-walled aluminum tube of 2.600-in outside diameter, wall thickness of 0.004-in , length of 3.5-in, and yield strength of 37,700psi, determine the torque at which the tube will fail in torsional buckling.
The inlet water temperature to the condenser is at 20oC, 120 kPa and is leaving the condenser at 30oC, 120 kPa. Determine the required mass flow rate of the water, in kg/s, for this steady state steady flow process.
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