2 Jalina left her home at 1000 to cycle to a park On her way to the park, she stopped at a fhend's house and then continued her journey to
Here is the distance-time graph for her journey to the park
the park
25
20
15
Distance from
home (km)
10
1000
1100
1200
1300
1400
1500
Time
(a) On her journey to the park, did Jalina cycle fister

Time

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! )