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Calculating theoretical probabilities from two-way tables (two events)

The starter and exit quiz of the lesson “Calculating theoretical probabilities from two-way tables (two events)”, from the unit “Probability: theoretical probabilities” (Year 9 Maths) by Oak National Academy.

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Oak National Academy

12 questions

  1. In a fair six-sided die, what is the probability of rolling a 5 and getting a head in a single toss of a fair coin?
  2. A counter is taken from the bag. Its letter is noted and then it is placed back into the bag. A counter is taken from the bag again. Which of these options is not the correct sample space?
  3. If the probability of an event (A) is /frac{3}{7}, and the experiment is repeated 49 times, what is the theoretical number of times event (A) will occur?
  4. Which of the events {A,B,C} is the least likely to occur according to this probability tree?
  5. John uses an unbiased random selection tool to generate a single letter of the alphabet. It is repeated three times. Which of the following letter sequences is the least likely?
  6. There are two trials. In Trial 1, a spinner with {A, B} is spun twice. In Trial 2, a spinner with {B, C} is spun twice. Which statement is true?
  7. If this spinner is spun twice, what is the probability that the sum of both results would be 11?
  8. If this spinner is spun twice, what is the probability of not losing either time?
  9. If this spinner is spun twice, what is the probability that the sum of both results would be odd?
  10. If spun twice what is the probability this spinner would spell 'pea' then 'nut' ?
  11. If each of these spinners is spun once, what is the probability of getting H and 6?
  12. If this spinner is spun twice, what is the probability of the sum of the results being less than 10?

License: OGL

Calculating theoretical probabilities from two-way tables (two events) · Examplary