Exhibit 2-3 The Number of Sick Days Taken (Per Month) by 200

question 32

Multiple Choice

Exhibit 2-3
The number of sick days taken (per month) by 200 factory workers is summarized below.
-Refer to Exhibit 2-3. The cumulative relative frequency for the class of 11 - 15

• A)is 199
• B)is 0.07
• C)is 1
• D)is 0.995

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Definitions:

Poisson Distribution

A probability distribution that expresses the probability of a given number of events happening in a fixed interval of time or space, assuming these events happen with a known constant rate and independently of the time since the last event.

Probability Of Occurrence

The likelihood of an event happening, measured on a scale from 0 (impossibility) to 1 (certainty).

Span Of Time

The duration or extent between two points in time.

Poisson Random Variable

A type of random variable that represents the number of events occurring in a fixed interval of time or space, under the condition that these events happen with a known constant mean rate and independently of the time since the last event.