A Laboratory Worker Finds That 1

question 155

Multiple Choice

A laboratory worker finds that 1.6% of his blood samples test positive for the HIV virus.In a random sample of 130 blood tests,what is the standard deviation of the number that test positive for the HIV virus?

• A)2.04672
• B)11.31
• C)2.08
• D)1.44
• E)1.43

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