a) The Project Manager found that distribution of the amount of gravel (in tons) sold by...
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a) The Project Manager found that distribution of the amount of gravel (in tons) sold by a particular construction supply company in a given week is a continuous random variable X with PDF as f(x) = (1- x?) 0sx <1 elsewhere Find the expected value and standard deviation of the amount of gravel sold in a week. b) Consider a normally distributed random variable X with a mean of 85 and standard deviation of 10. Find P(90 <X < 100)? a) The Project Manager found that distribution of the amount of gravel (in tons) sold by a particular construction supply company in a given week is a continuous random variable X with PDF as f(x) = (1- x?) 0sx <1 elsewhere Find the expected value and standard deviation of the amount of gravel sold in a week. b) Consider a normally distributed random variable X with a mean of 85 and standard deviation of 10. Find P(90 <X < 100)?
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