A
alyaaredha
Member
in question 1.10 part i)b) we are asked to find he probability he passes the 5th exam, given that he fails the first three. The question seems pretty straightforward and I would assume that you calculate the probability using these 2 paths :
F-F-F-F-P or F-F-F-P-P getting (1-beta^2)(beta*alpha+(1-beta)*beta). The answer given is just (beta*alpha+(1-beta)*beta) and i can't seem to see why. Could anyone let me know where I went wrong?
Thank you!!
Aliaa
F-F-F-F-P or F-F-F-P-P getting (1-beta^2)(beta*alpha+(1-beta)*beta). The answer given is just (beta*alpha+(1-beta)*beta) and i can't seem to see why. Could anyone let me know where I went wrong?
Thank you!!
Aliaa