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The number of typing errors made by a typist has a Poisson distribution with an average of three and a half errors per page. If four or more errors appear on a given page, the typist......

User Jfrank
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Final answer:

The number of typing errors made by a typist follows a Poisson distribution with an average of 3.5 errors per page. If there are four or more errors on a given page, the typist has made more errors than the average.

Step-by-step explanation:

The given question is about the Poisson distribution and its application in calculating the probability of certain events.

In this case, the number of typing errors made by a typist follows a Poisson distribution with an average of 3.5 errors per page.

If four or more errors appear on a given page, the typist can be considered to have made more errors than the average.

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