22:00
1 of 5
Question 1 · 4 marks
Calculator allowed
Edexcel 9FM0
X
X
X
is the trial number of the first success when independent trials have success probability
0.3
0.3
0.3
.
(a)
Find
P
(
X
=
5
)
P(X=5)
P
(
X
=
5
)
.
2 marks