4. 011 average there are 2.3 potholes per mile along a oertain type of highway. It is assumed that the Poisson process applies to the number of potholes. {a} 1Write an exact, computable expression for the probability that there are at least 4 potholes along a given stretch of 3 miles of highway. Also compute this probability as a decimal. {b} Use a Table to give a decimal answer for the probability of emu-city =1 potholes in a given stretch of 3 miles of highway. Show your work. {c} Find the conditional probability that there is exactly 1 pothole in the rst 3 miles of highway given that there are either 1, 2., or 3 potholes in this 3 mile stretch of highway. Show your work