Suppose routine blood typing for 400 army recruits reveals, Ask an Expert

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Suppose routine blood typing for 400 army recruits reveals that 6 of them have AB negative blood.

a. What assumptions would you have to make for this to be considered a random sample of army personnel? Of the entire country?

b. Place an approximate 80% confidence interval on the proportion with AB-negative blood among army recruits.

c. Assuming it can be justified, place an approximate 80% confidence interval on the proportion of those with AB-negative blood in the entire country.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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