Merry and bright? A string of Christmas lights con-
1 answer:
Answer:
0.6676
Step-by-step explanation:
given that A string of Christmas lights con-
tains 20 lights. The lights are wired in series, so that
if any light fails, the whole string will go dark. Each
light has probability 0.98 of working for a 3-year
period.
Each light is independent of the other.
The probability that the string of lights will
remain bright for 3 years.
= Probability that each light does not fail
= multiplication (prob of one light does not fail)
=
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