The following terms can be used to describe the probability that an event happens - Junior Cycle Mathematics - Question 7 - 2014
Question 7
The following terms can be used to describe the probability that an event happens.
Likely Certain Unlikely Impossible 50 : 50
For each event in the tab... show full transcript
Worked Solution & Example Answer:The following terms can be used to describe the probability that an event happens - Junior Cycle Mathematics - Question 7 - 2014
Step 1
When a fair coin is tossed you get a head.
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Answer
The probability of getting a head when tossing a fair coin is equal to the probability of getting a tail, which is 50%. Therefore, the correct term to describe this event is 50 : 50.
Step 2
If you buy a lottery ticket for next Saturday's draw, you will win the jackpot.
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Answer
The likelihood of winning a lottery jackpot is typically very low. Hence, this event is best described as Unlikely.
Step 3
The 1st of January will be New Year’s Day.
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Answer
This event is certain as it is a widely recognized fact. Therefore, it is described as Certain.
Step 4
A: You pick a red ball from a bag containing 3 black and 7 red balls.
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Answer
There are 10 balls in total, of which 7 are red. Therefore, the probability of picking a red ball is P(A)=107=0.7. This places event A in the range of 0.5 to 1.
Step 5
B: You get a natural number less than 7 when you roll a regular six-sided die.
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One can get the numbers 1, 2, 3, 4, 5, or 6, which are all less than 7. Hence, the probability is P(B)=66=1. This is classified as 1.
Step 6
C: You pick a red card from a deck of playing cards.
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There are 52 cards in total, with 26 being red (hearts and diamonds). Thus, the probability is given by P(C)=5226=0.5. So, event C falls in the range of 0.5.
Step 7
D: You pick a yellow ball from a bag containing 4 red balls and 2 white balls.
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There are 6 balls, and there are no yellow balls present, making the probability P(D)=0. Hence, event D is classified as 0.
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