# Question

At an outpatient mental health clinic, appointment cancellations occur at a mean rate of 1.5 per day on a typical Wednesday. Let X be the number of cancellations on a particular Wednesday.

(a) Justify the use of the Poisson model.

(b) What is the probability that no cancellations will occur on a particular Wednesday?

(c) One?

(d) More than two?

(e) Five or more?

(a) Justify the use of the Poisson model.

(b) What is the probability that no cancellations will occur on a particular Wednesday?

(c) One?

(d) More than two?

(e) Five or more?

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