We have been given that:
Vector
and
.
Component form of a vector implies to write the vector with each individual components.
Now, our vector
is given by

Now, 
and 
Plugging the values of
and
, we get:

So, the vector 'e' in its component form is given as:

3/36 (8.333%) thats the probability
In this question it is already given that a person travels 8 miles in 0.5 hours. This is enough information to get to the required answer. Let us first write down all the information's that are already given in the question.
In 0.5 hours the person covers a distance = 8 miles
Then
In 1 hour the person covers a distance of = 8/0.5 miles
= 16 miles
So the speed of the person in miles per hour = 16/1 miles/hour
= 16 miles per hour
they can ship out 271 boxes each day. 3,258/12 is 271.5 but the 0.5 doesn't matter bc that'd be half a box. a total of 2 crates can be filled fully with another crate that isn't completely full (in total 3 crates max)