Of the adults in jefferson county 10 percent have had cpr, Ask an Expert

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Determination of Sample size for an interval estimate of the population proportion.

Of the adults in Jefferson County, 10 percent have had CPR training. For a randomly selected group of students from this county, how large will the group have to be in order for the probability that have as a minimum one group member has had CPR training to be at least 0.90?

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