In responding to a survey question on a sensitive topic (such as "Have you ever tried marijuana?"), many people prefer not to respond in the affirmative. Suppose that 80% of the population have not tried marijuana and all of those individuals will truthfully answer no to your question. The remaining 20% of the population have tried marijuana and 70% of those individuals will lie. Derive the probability distribution of Y, the number of people you would need to question in order to obtain a single affirmative response.
In responding to a survey question on a sensitive topic (such as "Have you ever tried marijuana?"), many people prefer not to respond in the affirmative. Suppose that 80% of the population have not tried marijuana and all of those individuals will truthfully answer no to your question. The remaining 20% of the population have tried marijuana and 70% of those individuals will lie. Derive the probability distribution of Y, the number of people you would need to question in order to obtain a single affirmative response.
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In responding to a survey question on a sensitive topic (such as "Have you ever tried
marijuana?"), many people prefer not to respond in the affirmative. Suppose that 80% of
the population have not tried marijuana and all of those individuals will truthfully answer no
to your question. The remaining 20% of the population have tried marijuana and 70% of those
individuals will lie. Derive the probability distribution of Y, the number of people you would
need to question in order to obtain a single affirmative response.
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