Consider the experiment that measures the times of the arrival of the
first customer on each of 2 days. W consists
of all points (x1, x2)
such that 0 £ x1,
x2 £
8, where x1 represents the time
the first customer arrives on the first day, and x2
represents the time the first customer arrives on the second day. Consider
all events associated with this experiment, and assume that the probabilities
of such events can be obtained.
To illustrate how this can be evaluated, suppose that b = 4 hours. All
the values of x1, x2
are sought such that (x1, x2)/2
£ 4 or x1
+ x1 £
8. This is shown by the shaded area in the figure here.
