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Vending machine. The time between consecutive uses of a vending machine is Exponential with average 15 minutes.
a. Given that the machine has not been used in the previous 5 minutes, what is the probability that the machine will not be used during the next 10 minutes?
b. How many purchases are expected within the next hour?
c. What is the distribution of the number of purchases to be made within the next hour?
d. Suppose that a person pays 75 cents for each beverage in the vending machine. The supplier pays 40 cents per beverage in the machine, and thus makes a profit of 35 cents per beverage. What is the expected profit made during a given 8 hour period?
What might be the advantages of selecting the setting power spectrum rather than amplitude spectra? Which frequencies are emphasised and which suppressed?
an ac generator with a frequency of 150hz and an rms voltage of 22.5v is connected in series with a 15.0 kilo ohms
In which case does the output suffer distortion? What influenced your answer?
How do enterprise systems help businesses achieve operational excellence?
Binary symmetric channel, Assume that we are transmitting binary digits over a binary symmetric channel. Let p(x=0)=p(x=1)=0.5.
A candidate material for a turbine blade application oxidizes by diffusion of metal atoms through the oxide to the metal surface, where metal and oxygen react to form the oxide. After 10 hours at 550*C, an oxide layer 8µm thick has formed.
What is the new angular speed when the man walks to a point 1.7 m from the center?
Design a system that repeatedly computes and outputs the sum of all positive numbers within a 512 word register file A consisting of 32-bit signed numbers.
Define line impedance. What is its value for an infinitely long line?
What strategies are useful for managing project risk and system implementation?
An autotransformer with a total of 600 turns has its secondary windings embracing 200 turns. The 600 turns are connected to a 60-Hz, 2400-V driving voltage. A load connected to the secondary draws 4.8-kVA at 0.6 power factor lagging.
Why should the number of inverters be odd? What could happen if an even number of inverters were used in the ring oscillator?
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