I believe the correct answer is A
Answer:
1.83%
Step-by-step explanation:
For the expected value of 4 cases per 1000 children. We can use a formula for Poisson distribution to calculate the probability that none of the 1000 students would contract the flu:



So the probability of this to happens is 1.83%
Answer:
it is equal to 9/12 and 1
The dot has to be colored in
Answer:
a/b
Step-by-step explanation:
ratio is a to b so a:b or a/b