a) The number of students who come into the tutoring center between 8 and 8:30am has a Poisson distribution with λ =5. Determine P(x ≤ 2) b) How many students can the tutoring center be 95% confident that the number of students on any given day will not exceed that number?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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a) The number of students who come into the tutoring center between 8 and 8:30am has a Poisson distribution with λ = 5. Determine \( P(x \leq 2) \)

b) How many students can the tutoring center be 95% confident that the number of students on any given day will not exceed that number?
Transcribed Image Text:a) The number of students who come into the tutoring center between 8 and 8:30am has a Poisson distribution with λ = 5. Determine \( P(x \leq 2) \) b) How many students can the tutoring center be 95% confident that the number of students on any given day will not exceed that number?
Expert Solution
Step 1: Write down the given information

Poisson distribution : 

λ = 5 

Probability : 

P(X=x) = (λx * e(-λ)) / x! 

Here : 

x! = (x*(x-1)*(x-2)*.........1) 

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