Me asap 40 points and

the table shows the number of students in a school who like rap and/or hip-hop:

like rap do not like rap total

like hip-hop 35 8 43

do not like hip-hop 10 21 31

total 45 29 74

what is the relative frequency, by row, of students who do not like rap or hip-hop?
a: 0.17
b: 0.68
c: 0.72
d: 0.81

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! )

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7  

a rotation about point l

step-by-step explanation:

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