Mila’s Sandwich Shop sells sub sandwiches in four sizes. The probabilities that a customer will order a 3-inch, 6-inch, 9-inch, or 12-inch sandwich from the shop are shown in the table. A 2-column table with 4 rows. Column 1 is labeled sandwich size with entries 3-inch, 6-inch, 9-inch, 12-inch. Column 2 is labeled probability with entries 0.19, 0.23, 0.28, 0.30.

What is the probability that a customer orders something other than a 3-inch or 12-inch sandwich?

0.23
0.28
0.49
0.51
0.58

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! )

ome people is not even worth it to even try it in the air.

step-by-step explanation:

monitors suck a question

step-by-step explanation:

answer is  

d.

a circle

i got it down for you chief.