Find the value of k for which the given function is a probability density function. rrx) = 9k on [1, 1] 4. [46.66 Points] DETAILS WANEFMACS P.2.027. ' W No Assuming that workers' salaries in your company are uniformly distributed between $25,000 and $50,000 per year, nd the probability that a randomly chosen worker earns an annual salary between $30,000 and $40,000. :1