Please answer these two questions Accidents occur at a rate of 2.5 per month, and the timebetween accidents is exponentially distributed. Let T bethe waiting time random variable from the beginning ofan observation until the third accident. Find the E[T]and Var[T].If Var[X+Y]=3, Var[X-Y]=1, E[X]=1 and E[Y]=2, thenwhat is E[XY]?

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Answered: Accidents occur at a rate of 2.5 per…

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter7: Distance And Approximation

Section7.3: Least Squares Approximation

Problem 33EQ

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Accidents occur at a rate of 2.5 per month, and the time between accidents is exponentially distributed. Let T be the waiting time random variable from the beginning of an observation until the third accident. Find the E[T] and Var[T].