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7% of Americans have an O negative blood type. A SRS of 400 Americans are surveyed....

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Basic Math

7% of Americans have an O negative blood type. A SRS of 400Americans are surveyed. Using normal approximation to the binomial,what is the approximate probability that at least 34 of them havethe o negative blood type?

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Answer & Explanation Solved by verified expert
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Let denote the randomvariable denoting the number of Americans who have a blood group ofO negativeIt is given that a sample of 400Americans has been considered and approximately 7 of the Americanshave O negative blood type Therefore the random variablefollows the Binomial distribution with    See Answer
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