The number of errors in a textbook follow a poisson distribution with a mean of 0.02 errors per page. what is the probability that there are 3 or less errors in 100 pages?

0.8571

Step-by-step explanation:

Poisson distribution formula:

 , where x=0,1,2,3... is a poisson variable , = Mean of the distribution .

Let x be the number of errors in a textbook that follow a Poisson distribution with a mean of 0.02 errors per page.

For 100 pages ,

Now , the probability that there are 3 or less errors in 100 pages will be :-

Hence, the probability that there are 3 or less errors in 100 pages = 0.8571

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24

60%