Resistors labeled 100 Q have true resistances that are between 80 and 120 Q.Let X be the resistance of a randomly chosen resistor. The probability density function of X is given by X- 80 80

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Resistors labeled 100 Q have true resistances that are between 80 and 120 Q.Let X be the
resistance of a randomly chosen resistor. The probability density function of X is given by
X- 80
80 <x < 120
800
f(x) =
%3D
otherwise
What proportion of resistors have resistances less than 90 Q?
Find the mean resistance.
Find the standard deviation of the resistances.
Find the cumulative distribution function of the resistances.
a.
b.
C.
d.
Transcribed Image Text:Resistors labeled 100 Q have true resistances that are between 80 and 120 Q.Let X be the resistance of a randomly chosen resistor. The probability density function of X is given by X- 80 80 <x < 120 800 f(x) = %3D otherwise What proportion of resistors have resistances less than 90 Q? Find the mean resistance. Find the standard deviation of the resistances. Find the cumulative distribution function of the resistances. a. b. C. d.
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