Multiple Choice
As many as 20% of all Americans contract influenza each year. A sample of 400 randomly selected Americans is chosen and the number with influenza is recorded. Let X represent the number with influenza in the sample. What is the probability that between 15% and 25% of the sample is observed to have influenza?
A) 0.0052
B) 0.0062
C) 0.9876
D) 0.9948
Correct Answer:
Verified
Correct Answer:
Verified
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