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Please written by computer source The distribution of salaries (in per annum) in the building industry is represented by a random variable X with pdf

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Please written by computer source

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The distribution of salaries (in per annum) in the building industry is represented by a random variable X with pdf k \"58) _ F a: 210,000 0 otherwise (a) Find the mean salary of an employee. (b) Find the standard deviation of the employees' salaries

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