Contaminated gun cartridges. Refer to the investigation of contaminated gun cartridges at a weapons manufacturer presented in

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Contaminated gun cartridges. Refer to the investigation of contaminated gun cartridges at a weapons manufacturer presented in Exercise 4.33

(p. 222). In a sample of 160 cartridges from a certain lot, 36 were found to be contaminated and 124 were “clean.” If you randomly select 7 of these 160 cartridges, what is the probability that all 7 will be

“clean”?

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