The number of telephone calls coming into Grace Floral Shop to place orders averages 3per minute.(i) Stating its parameter(s), what is the probability distribution of this variable? (ii) Compute the probability that 5 calls will arrive per minute. (iii) Compute the probability that 3 or more calls will arrive in a 3-minute interval?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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The number of telephone calls coming into Grace Floral Shop to place orders averages 3
per minute.
(i) Stating its parameter(s), what is the probability distribution of this variable? 
(ii) Compute the probability that 5 calls will arrive per minute. 
(iii) Compute the probability that 3 or more calls will arrive in a 3-minute interval?

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