Question

A vehicle with a particular defect in its emission control system is taken to a succession of randomly selected mechanics until

r = 15

of them have correctly diagnosed the problem. Suppose that this requires diagnoses by 20 different mechanics (so there were 5 incorrect diagnoses). Let

p = P(correct diagnosis),

so p is the proportion of all mechanics who would correctly diagnose the problem. What is the mle of p?

p̂ =

Answer 1