At an outpatient mental health clinic, appointment cancellations occur at a mean rate of 1.2 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.
Cancellations are independent and similar to arrivals.
Cancellations are not independent.
Most likely cancellations arrive independently.
(b) What is the probability that no cancellations will occur on a particular Wednesday? (Round your answer to 4 decimal places.)
Probability
(c) What is the probability that one cancellation will occur on a particular Wednesday? (Round your answer to 4 decimal places.)
Probability
(d) What is the probability that more than two cancellations will occur on a particular Wednesday? (Round your answer to 4 decimal places.)
Probability
(e) What is the probability that four or more cancellations will occur on a particular Wednesday? (Round your answer to 4 decimal places.)
Probability

Write the equation of a line that is perpendicular to the given line and that passes through the given point. –3x – 6y = 17; (6, 3) y = x – 9 y = 2x – 9 y = –2x – 9 y = x + 0 3. is the relationship shown by the data linear? if so, model the data with an equation. x y 1 5 5 10 9 15 13 20 the relationship is linear; y – 5 = (x – 1). the relationship is not linear. the relationship is linear; y – 5 = (x – 1). the relationship is linear; y – 1 = (x – 5). write an equation in point-slope form for the line through the given point with the given slope. (–10, –1); m = y + 10 = (x + 1) y – 1 = (x – 10) y – 1 = (x + 10) y + 1 = (x + 10) 5. write an equation for each translation of . 6.5 units up y + 6.5 = | x | y = | 6.5 x | y = | x | + 6.5 y = | x | – 6.5 6. write an equation for each translation of . 5.5 units right y = | x | + 5.5 y = | x – 5.5 | y = | x | – 5.5 y = | x + 5.5 | 7. which equation translates y = | x | by 8 units to the left? y = | x | – 8 y = | x | + 8 y = | x – 8| y = | x + 8|