Suppose a Flu Epidemic Is Sweeping a Campus and Many

question 6

Multiple Choice

Suppose a flu epidemic is sweeping a campus and many students are sick. Student health services finds that 30% of students are ill. A nurse samples a dormitory with 30 students and wants to calculate the probability that at least 10 students are sick. Which of the following statements is false?

• A)The binomial distribution cannot be used in this example, because the probability that 1 student is sick is not independent of another student in the dorm also being sick.
• B)The Normal approximation to the binomial cannot be used, because the binomial distribution is not an appropriate model.
• C)The Normal approximation to the binomial could not be used, even if the binomial were an appropriate model, because np = 30 × 0.3 = 9 and this violates one criterion for using the Normal approximation.
• D)The binomial distribution can be used here, because our variable of interest is a finite count with minimum 0 and maximum 30.

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Definitions:

Emotionality

The quality or state of being emotional; the capacity or tendency to perceive or express emotions.

Membership Disagreements

Conflicts or differences of opinion among members of a particular group or organization.

Firing a Member

The process of terminating an individual's employment due to reasons such as performance issues, behavioral problems, or company downsizing.

Sanctions

Penalties or other means of enforcement used to encourage compliance with laws or regulations.