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The grades of a group of 1000 students in an exam are normally distributed with a mean of 70 and a standard deviation of 10. A student from this group is selected randomly.
a) Find the probability that his/her grade is greater than 80.
b) Find the probability that his/her grade is less than 50.
c) Find the probability that his/her grade is between 50 and 80.
d) Approximately, how many students have grades greater than 80?
Describe the current flow rule in a series circuit. Draw out series circuit and solve for values. The know values are total current is .15 amps, resistor 1 uses 20 watts of power, and resistor 2 uses 12 watts of power
Design a benchtop apparatus that illustrates the basic principles of a mixing heat exchanger.- Determine the measurements that must be made to compute the second law availability of the heat exchanger.
A 75 ohms lossless air transmission line at 3 GHz is terminated in a load of (300-j400) (a) What is the load reflection coecient (b) Determine the impedance at 2.5 cm, 5.0 cm, 7.5 cm and 10 cm from the load.
Calculate: a. The rated primary and secondary currents b. The secondary voltage if it is connected at full load of 2000 kW c. The voltage regulation from no-load to full load. Voltage regulation is given by: (E(no-load)-E (full-load))/E(full-load)..
How to Program PIC18 Microcontroller in C ? (Need Step by Step Tutorial With Pictorial Views)
Explain the theory on PZT materials and mechanical resonance
Justify the rationale of this second approach
When silicon atoms combine to form a solid, they arrange themselves into an orderly pattern called, When is the result when a diode's reverse bias is increased, What controls the electrical properties of the atom
For the feedback register shown in Figure 1, determine the count sequence. Assume an initial state of Qa, Qb, Qc, Qd,Qe = 10000. Design a sequential logic system, using JK Flip-Flops, which detects a bit pattern of 1101 in a stream of serial data.
Use Matlab to verify the central limit theorem for the sum of N independent exponential RVs (with a=0 and b=4) for N=5, 10 and 20. Repeat for the sum of N independent RayleighRVs (with a=0 and b=4). Comment on the fit to the approximate Gaussian pdf.
Design a simple BJT amplifier circuit for receiving the over-the-air HDTV signals. The circuit should have a voltage gain of 10-100, assuming your signal source (antenna) is connected to amp through a cable with an impedance of 75
A 50 ohms lossless transmission line is to be connected to a load of 25 ohm. Use a lamda/4(quarterLamda) length of line of unknown impedance between the load and the 50-ohm line to match it,
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