A student is told to work any 8 out of 10 questions on an exam. In how many different ways can he complete the exam
1 answer:
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Since 
, we know that 
follows a Poisson distribution with parameter 
.
Now assuming
denote the mean and standard deviation of , respectively, then we know right away that 
and 
.
So,
Now assuming
So,
Answer:
b)
Step-by-step explanation:
b) set up equations so they are equal to each other,
this is when f(x)=g(x) so our approximation was close.
c)solving it graphically is nearly impossible because the solution can be any value around the intersection. only way to be sure is to solve it symbolically.
