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Probability

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Probability

1. 1. The triangles are similar
2. 3. Impossible Certain more likely less likely Equally likely and unlikely
3. 4. A bowl contains 12 slips of paper, each with a different name of a month. Find the probability that a slip selected at random from the bowl has a name of a month that starts with the letter J.
4. 5. A skateboard company inspected 1000 skateboards at random. They found no defects in 992 skateboards. What is the probability that a skateboard selected at random had no defects? Write the probability as a percent.
5. 6. Based on the probability of finding a skateboard without defect, if the skateboard company has 8976 skateboards in its warehouse, predict how many skateboards are likely to have no defect.
6. 9. Find the probability of the spinner stopping on:
7. 10. P (R) = P (R) = P (R) = P (R) = P (A) = P (A) = P (A) = P (A) = P (N) = P (N) = P (N) = P (N) = P (D) = P (D) = P (D) = P (D) = P (O) = P (O) = P (O) = P (O) = P (M) = P (M) = P (M) = P (M) = 1st Card 2nd Matches 1st Card 2nd Matches Probability w/ Replacement Probability WITHOUT Replacement
8. 11. Suppose you roll a red number cube and a blue number cube. What is the probability that you will roll a 3 on the red cube and an even number on the blue cube?
9. 12. You draw a tile from a bag containing 4 As, 6 Bs, and 8 Cs. You replace the first tile in the bag and then draw again. Find the probabilities.
10. 13. You draw a card from the pile below, then keep it before drawing the second card. Find the probabilities. T then H then E W H I T E H A V E N
11. 15. Bellwork 3) Suppose you spin a spinners with 8 sections numbered 1 to 8. a) What is the probability of getting an odd or a seven. b) What is the probability of getting an even then a multiple of 3.
12. 18. One out of every 25 customers will win a small pizza. a) Probability a customer will win b) With 275 customers, how many winners would you expect?
13. 24. Exit Ticket and H/W What score do you expect to get on tomorrow's test? Why? Reflect with at least two complete sentences.