A random sample of n bike helmets manufactured by a

Chapter 6, Problem 6.20

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A random sample of n bike helmets manufactured by a certain company is selected. Let X the number among the n that are flawed, and let p P(flawed). Assume that only X is observed, rather than the sequence of Ss and Fs. a. Derive the maximum likelihood estimator of p. If n 20 and x 3, what is the estimate? b. Is the estimator of part (a) unbiased? c. If n 20 and x 3, what is the mle of the probability (1 p)5 that none of the next five helmets examined is flawed?

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