The number of typographical errors in a document follows a Poisson distribution with a mean of 3 errors per page. Let X represent the number of errors on 4 pages. Find $\mu _ { x }$
A) 3
B) 12
C) 13
D) 3.5

Question

The number of typographical errors in a document follows a Poisson distribution with a mean of 3 errors per page. Let  X  represent the number of errors on 4 pages. Find $\mu _ { x }$
A) 3
B) 12
C) 13
D)  3.5

Quizplus · Accepted Answer

The mean of a Poisson distribution is given by $\lambda$, which in this case is 3 errors per page. For 4 pages, the mean number of errors ($\mu_x$) is $4 \times 3 = 12$.

The Number of Typographical Errors in a Document Follows a Poisson