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Three resistors are to be connected in series so that their resistances add together for the...

Three resistors are to be connected in series so that their resistances add together for the total resistance. One is a 150-ohm resistor and the other two are 100-ohm resistors. The respective specification limits are 150 ± 7.5 and 100 ± 6. If the resistances of the three resistors are normally distributed and the tolerance for the resistance of each resistor is equal to 6 ¥ the respective standard deviation, a. What are the two values within which the total resistance will lie 99.73% of the time? b. How many standard deviations from the nominal value will the limits of the additive tolerance for the total resistance lie?

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