Question

please do on ti 84 and explain how you got your answers

the potholes on a major highway occur at a rate of 3.4 per mile. compute the probability that the number of potholes over 3 miltes of randomly selected highway is

a) exactly 7

b) fewer than 7

c) at least 7

Answer 1

Put i = 3(3.4)=10.2 and x=7 Using poissonpdf (10.2,7), the required probability is 0.08472 steps: 2ND VARS → poissonpdf ) b)p(x<7)= p(x56) using poissoncdf (10.2,6) 0.11803 steps: 2ND VARS → poissoncdf c)p(x27) =1-p(x56) =1-0.11803 =0.88197