Problem 51P

The expected number of typographical errors on a page of a certain magazine is .2. What is the probability that the next page you read contains (a) 0 and (b) 2 or more typographical errors? Explain your reasoning!

Solution

Step 1 of 2

Given that the expected no.of typographical errors in a on page of a certain magazine is 0.2

Let X denote the no.of errors in a page

Here X is following the poisson distribution with parameter

The pmf of poisson distribution is

a) We have to find the probability that the next page is having zero errors

Now

=0.8187

Hence the probability that the next page is having zero errors is 0.8187