Andrew believes the honor roll students at his school have an unfair advantage in being assigned to the math class they request. He asked 500 students at his school
the following questions: "Are you on the honor roll?" and "Did you get the math class
you requested?" The results are shown in the table below:
Honor roll Not on honor roll Total
125
340
Received math class requested 215
Did not get math class requested 80
Total
295
80
160
205
500
Help Andrew determine if all students at his school have an equal opportunity to get
the math class they requested. Show your work and explain your process for
determining the fairness of the class assignment process. (10 points)

answer: this doesnt make any sense especially the photo.

step-by-step explanation:

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )