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Montano1993 [528]
3 years ago
5

Ntial)

Mathematics
1 answer:
luda_lava [24]3 years ago
6 0
B is the correct answer
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There is a 30 percent chance that A can fix her busted computer. If A cannot, then there is a 40 percent chance that her friend
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Answer:

(a) 0.70

(b) 0.40

Step-by-step explanation:

Mutually-exclusive events are those events which cannot occur together.

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Here the two events can be defined as follows:

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B = B can fix the busted computer

The information provided are as follows:

P (A) = 0.30

P (B) = 0.40

If A cannot, then there is a chance that her friend B can fix it.

The above statement suggest that the events A and B are mutually exclusive, i.e. if A can fix the computer then B does not have to and if cannot then only B will fix it.

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(a)

Compute the probability it will be fixed by either A or B as follows:

P (A or B) = P (A) + P (B) - P (A and B)

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(b)

Compute the probability that if it is fixed it will be fixed by B as follows:

P (not A and B) = P (B) - P (A and B)

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                         = 0.40

Thus, the probability that if it is fixed it will be fixed by B is 0.40.

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