# Topic 2 – Probability Project…….solved

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The following statements are all incorrect. Explain the statements and the errors fully using the
probability rules discussed in topic two.
1. The number 7 is a lucky number so you are more likely to win raffles with ticket number
7 than with a different number.
2. I roll two dice and add the results. The probability of getting a total of 8 is 1/12 because
there are 12 different possibilities and 8 is one of them.
3. Mr. Verde has to have a major operation. Ninety-three percent of the people who have
this operation make a complete recovery. There is a 93% chance that Mr. Verde will
make a complete recovery if he has this operation.
4. The Ramblers play the Chargers. The Ramblers can win, loose, or draw, so the
probability that they win is 1/3.
5. I have flipped an unbiased coin four times and got heads. It is more likely to get tails the
next time I flip it.
6. Thirty random college students are asked if they study during the week. Since 60% said
yes, a statement can be made that 40% of students only study on the weekend.
7. I have two coins. If I flip them together, the probability of getting a heads and a tails is
1/3. This is because you can only get two heads, two tails, or one head and one tail.