In which discrete distributions does the probability of success vary from one trial to the next?10 r

In which discrete distributions does the probability of success vary from one trial to the next?10 rolls of film in a box and 3 are defective. Two rolls are selected one after the other. What is the probability of selecting a defective roll followed by another defective roll?Company x has 80% females (90% attended college) and 20% males (78% attended college) What is the probability of selecting a female who DID NOT attend college

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