Question

Suppose that the probability density function of the length of computer cables is f (x) = 2x/(5^{2}) for x between 0 and 5 meters. Determine the standard deviation of the cable length. Please enter the answer to 2 decimal places.

Step 1

Let *X* be the continuous random variable which denotes the length of the computer cables.

The probability density function of *X* is given by,

Step 2

The standard deviation of *X* is ca...

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