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A clinical test on humans of a new drug is normally done in three phases...

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A clinical test on humans of a new drug is normally done in three phases Phase I is conducted with a relatively small number of healthy volunteers For example a phase I test of a specific drug involved only 5 subjects Assume that we want to treat 5 healthy humans with this new drug and we have 10 suitable volunteers available Complete parts a through c below a If the subjects are selected and treated in sequence so that the trial is discontinued if anyone displays adverse effects how many different sequential arrangements are possible if 5 people are selected from the 10 that are available Choose the correct answer below OA 252 OB 3 628 800 OC 30 240 OD 120 b If 5 subjects are selected from the 10 that are available and the 5 selected subjects are all treated at the same time how many different treatment groups are possible different treatment groups possible c If 5 subjects are randomly selected and treated at the same time what is the probability of selecting the 5 youngest subjects P selecting the 5 youngest subjects Type an integer or a simplified fraction There are

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