5. The following diagram shows the possible scores when an unbiased four sided dice with faces numbered 1 to 4 thrown twice. 19 8 25 32 Number from 12 7 25 Score 9. 18 20 2nd throw 10 19 1 Number from 1st throw Determine the probability that a) the score is 7 and the first throw is a 2. b) the score is 7 c) the first throw is a 2, given that the score is 7. 4. 3. LO

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5. The following diagram shows the possible scores when an unbiased four sided dice
with faces numbered 1 to 4 thrown twice.
19
8
25
32
4.
Number from
12
7
25
Score
7.
6.
18
20
2nd throw
7.
10
19
1
2
3
Number from
1st throw
Determine the probability that
a) the score is 7 and the first throw is a 2.
b) the score is 7
c) the first throw is a 2, given that the score is 7.
4.
2.
Transcribed Image Text:5. The following diagram shows the possible scores when an unbiased four sided dice with faces numbered 1 to 4 thrown twice. 19 8 25 32 4. Number from 12 7 25 Score 7. 6. 18 20 2nd throw 7. 10 19 1 2 3 Number from 1st throw Determine the probability that a) the score is 7 and the first throw is a 2. b) the score is 7 c) the first throw is a 2, given that the score is 7. 4. 2.
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Step 1

Probability of an event is computed by taking the ratio of number of favourable outcomes to total number of possible outcomes. The probability gives the chances of occurrence of an event.

The probability of an event A given that event B occurred is called conditional probability of A and it is computed by PA|B=PABPB. The event AB means that both the events A and B occur together.

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