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(5.38) The design of an electronic circuit calls for a 100-ohm resistor and a 250-ohm resistor...

  1. (5.38) The design of an electronic circuit calls for a 100-ohm resistor and a 250-ohm resistor connected in series so that their resistances add. The components used are not perfectly uniform so that the actual resistances vary independently according to normal distributions. The resistance of 100-ohm resistors has mean 100 ohms and standard deviation 2.5 ohms, while that of 250-ohm resistors has mean 250 ohms and standard deviation of 2.8 ohms.

    (a) What is the distribution of the total resistance of the two components in series?

  2. (b) What is the probability that the total resistance lies between 345 and 355 ohms?

math   Statistics-And-Probability   
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Answer #1

X, N 10012.5) N (250 0.3) alho folow Noemal detubuten 100+256 356 3 N50 r(3166 y 드 355 - r (345-35 4 355 -35o r-0.9434 40.9434) -ax 0.82639-1 0-65 S:3 5.3 a p ko . q434 ) -1

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