1)76% of a contractor's jobs involves electrical work.64% of a contractor's jobs involve plumbing work.Of the jobs that involve plumbing work, 80% of the jobs also involves electrical work.

Let E = jobs involving electrical work

L = jobs involving plumbing work

Suppose one of the contractor's jobs is randomly selected.

Using the sixth Excel worksheet,

a)Find P(E).

b)Find P(L).

c)In words, what does E | L mean?

d)Find P(E | L).

e)Find P(E and L).

f)Are E and L mutually exclusive?Why or why not?

g)Find P(E or L).

h)Are E and L independent events?Why or why not?