Refer to Exercise 25. Instead of selecting n = 20 helmets to examine, suppose we examine helmets in succession until we have found r = 3 flawed ones. If the 20th helmet is the third flawed one, what is the mle of p? Is this the same as the estimate in Exercise 25? Why or why not? Is it the same as the estimate computed from the unbiased estimator of Exercise 19?

Data From Exercises 25

Data From Exercises 19

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A random sample of n bike helmets man- ufactured by a company is selected. Let X = the number among then that are flawed, and let p = P(flawed). Assume that only X is observed, rather than the sequence of S's and F's.