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The total time measured in units of 100 hours that a teenager runs her hair dryer over a period of one year is a continuous

The total time measured in units of 100 hours that a teenager runs her hair dryer over a period of one year is a continuous random variable X that has a density function

f(x) = xfor 0

= 2-xfor 1<= x<2.

= 0otherwise

Compute the P (0.5

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