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The end-of-year English scores for 10 students in an English class were compared over 2 years. The score for 2015
and for the same students in 2016 are as shown.
2015 30 31 35 37 39 41 41 42 43 46
2016 22 26 27 28 30 31 33 34 36 39
How does the mean score in 2015 compare to the mean score in 2016?
The mean for 2015 is
The mean for 2016 is
Therefore, the mean score in 2015 is
higher than 2016

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! )

really your just stupid if you don't know this

step-by-step explanation:

alaska, florida, nevada, south dakota, texas, washington and wyoming, tenessee and new hampshire.

step-by-step explanation: