1. Louisa’s route from home to work has two traffic lights. Let E denote the event that Louisa must stop at the first light, and let F denote the event that Louisa must stop at the second light. Suppose that P(E) = 0.4, P(F) = 0.3, and P(E and F) = 0.15.
a. Find the probability that Louisa must stop at at least one light. (In other words, what is the probability of the event E times F?)
b. Find the probability that Louisa must stop at exactly one of the two lights.
please show work and thanks a plethora!
a. Find the probability that Louisa must stop at at least one light. (In other words, what is the probability of the event E times F?)
b. Find the probability that Louisa must stop at exactly one of the two lights.
please show work and thanks a plethora!
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qa
from the figures given the 2 events aren't independent.
the probability of P(E & F) has already been GIVEN as 0.15 <-------
qb
P(only A) + P(only B) = (0.4-0.15) + (0.3-0.15) = 0.4 <--------
from the figures given the 2 events aren't independent.
the probability of P(E & F) has already been GIVEN as 0.15 <-------
qb
P(only A) + P(only B) = (0.4-0.15) + (0.3-0.15) = 0.4 <--------