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Find the value of k for which the given function is a probability density function. f(x) = 3k on [1, l] [414.28 Points] DETAILS WANEFMACG P.2.015. MY NOTES Find the value of k for which the given function is a probability density function. f(x) = kek" on [0, 9] [-114.28 Points] DETAILS WANEFMACG P.2.027. MY NOTES Assuming that workers' salaries in your company are uniformly distributed between $20,000 and $80,000 per year, find the probability that a randomly chosen worker earns an annual salary between $25,000 and $70,000. |:|