Probability Tree Worksheet Page 5
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4. Tom and Sam each take a driving test.
The probability that Tom will pass the driving test is 0.8
The probability that Sam will pass the driving test is 0.6
(a) Complete the probability tree diagram.
Tom
Sam
Pass
0.6
Pass
0.8
Fail
...............
Pass
0.6
...............
Fail
Fail
...............
(2)
(b) Work out the probability that both Tom and Sam will pass the driving test.
.......................................................
(2)
(c) Work out the probability that only one of them will pass the driving test.
.......................................................
Q4
(3)
(Total 7 marks)
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