Answer:
Part a : 0.002744
Part b : 0.997256
Step-by-step explanation:
The probability that a specific engine is available when needed is 0.86.
So, The probability that fire engine will not be available when needed = [tex]1-0.86=0.14[/tex]
(a)
The probability that no fire engine is available when needed =
[tex]0.14^{3}[/tex]
= 0.002744
(b)
p(at least one available) = [tex]1-0.002744[/tex]
= 0.997256
