### Probability of less than 3 cancellations will occur for patients of mental health clinic

At an outpatient mental health clinic, appointment cancellations occur at a mean rate of 1.5 per day on a typical Wednesday. What is the probability that less than 3 cancellations will occur on two Wednesdays? A) 0.8089 B) 0.4232 C) 0.2510 D) 0.2240 E) 0.1255