The text in a recently published book averaged 1 typographical error for each ten pages. Assume a Poisson distribution.

The text in a recently published book averaged 1 typographical error for each ten pages. Assume a Poisson distribution.

1)     What is the probability that there will be less than 3 typographical errors in ten pages?

A.   0.061

B.    0.184

C.    0.920

D.   0.981

2)     What is the probability that there will be more than three typographical errors in ten pages?

A.   0.019

B.    0.184

C.    0.462

D.   0.996

3)     What is the probability that there will be no typographical errors over five pages?

A.   0.393

B.    0.368

C.    0.607

D.   0

4)     What is the probability that there will be 2 typographical errors in twenty pages?

A.   0.184

B.    0.271

C.    0.677

D.   0.920