Answer to Question #112329 in Statistics and Probability for Mariamyussifsaeed

Question

The number of typos in a book has a poisson distribution with an average of 5 typos
per 100 pages. What is the probability that you cannot find a typo in 50 pages.

Answer 1

P(X=x)=(λ^xe^-λ )/x!

λ = 5 typos per 100 pages = 2.5 typos per 50 pages

P=P(X=0)=(2.5⁰*e^-2.5)/0!=0.0821