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Transcript
Grade D Probability The probability of scoring on a biased dice No. on dice 1 2 3 4 5 6 0.15 Probability 0.3 0.2 0.08 0.1 a)What is the probability of scoring 6? b) What is the probability of scoring 2 or 3? c) If I roll the dice 1000 times, how many times do I expect to roll a 2? -------------------------------------------------------------------------- Here are the probabilities of a 4 sided spinner. No. on spinner 1 2 3 4 1/ Probability ⅓ ⅜ 5 a)What is the probability of spinning a 2? b)If I spin the spinner 600 times, how many times would I expect to spin a 2? Grade D Probability-answers The probability of scoring on a biased dice No. on dice 1 2 3 4 5 6 0.15 Probability 0.3 0.2 0.08 0.1 a)What is the probability of scoring 6? 0.17 b) What is the probability of scoring 2 or 3? 0.5 c) If I roll the dice 1000 times, how many times do I expect to roll a 2? 0.3 x 1000 = 300 -------------------------------------------------------------------------- Here are the probabilities of a 4 sided spinner. No. on spinner 1 2 3 4 1/ Probability ⅓ ⅜ 5 a)What is the probability of spinning a 2? 11/120 b)If I spin the spinner 600 times, how many times would I expect to spin a 2? 55
