The number of typing errors made by a typist has a Poisson distribution with an average of six errors per page. If more than six errors appear on a given page, the typist must retype the whole page. What is the probability that a randomly selected page does not need to be retyped? (Round your answer to three decimal places.)

The probability that a randomly selected page does not need to be retyped is P(x≤6)=0.607.

Step-by-step explanation:

We have a Poisson distribution with a parameter that is equal to the average of six errors per page:

Then, the probability of having k errors per page can be calculated as:

Then, the probability of a randomly selected page does not need to be retyped (6 error or less) is:

add 5 subtract 1

step-by-step explanation: