PROBABILITY!!MATHS!!
2017/07/03 23:36
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1)A card is drawn randomly from a pack of 52 playing cards.What is the probability of getting the number 8?2)Peter is practising penalty kicks.He has scored 12 goals out of 30 trials.Find the empirical probability that Peter scores a goal while performing penalty kicks.3)According to the statistics of the... 顯示更多 1)A card is drawn randomly from a pack of 52 playing cards.What is the probability of getting the number 8? 2)Peter is practising penalty kicks.He has scored 12 goals out of 30 trials.Find the empirical probability that Peter scores a goal while performing penalty kicks. 3)According to the statistics of the past competitions,the probabilities for him to score a free throw.a 2-point shot and a 3-point shot are 4/5,3/4 and 2/3 respectively.In a competition,Bryan shot for 32 times,where 6 of them are 3- point shots and 16 of them are 2-point shots.If one point can be awarded for each successful free throw.find the expected value of Bryan's total score in the competition.
最佳解答:
1)A card is drawn randomly from a pack of 52 playing cards.What is the probability of getting the number 8? P(getting the number 8) = 4/52 = 1/13 2)Peter is practising penalty kicks.He has scored 12 goals out of 30 trials.Find the empirical probability that Peter scores a goal while performing penalty kicks. P(Peter scores a goal while performing penalty kicks) = 12/30 = 2/5 3)According to the statistics of the past competitions,the probabilities for him to score a free throw.a 2-point shot and a 3-point shot are 4/5,3/4 and 2/3 respectively.In a competition,Bryan shot for 32 times,where 6 of them are 3- point shots and 16 of them are 2-point shots.If one point can be awarded for each successful free throw.find the expected value of Bryan's total score in the competition. The expected value of Bryan's total score in the competition = 6*3+16*2+(32-16-6)*4/5*1 = 18+32+8 = 58
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PROBABILITY!!MATHS!!發問:
1)A card is drawn randomly from a pack of 52 playing cards.What is the probability of getting the number 8?2)Peter is practising penalty kicks.He has scored 12 goals out of 30 trials.Find the empirical probability that Peter scores a goal while performing penalty kicks.3)According to the statistics of the... 顯示更多 1)A card is drawn randomly from a pack of 52 playing cards.What is the probability of getting the number 8? 2)Peter is practising penalty kicks.He has scored 12 goals out of 30 trials.Find the empirical probability that Peter scores a goal while performing penalty kicks. 3)According to the statistics of the past competitions,the probabilities for him to score a free throw.a 2-point shot and a 3-point shot are 4/5,3/4 and 2/3 respectively.In a competition,Bryan shot for 32 times,where 6 of them are 3- point shots and 16 of them are 2-point shots.If one point can be awarded for each successful free throw.find the expected value of Bryan's total score in the competition.
最佳解答:
1)A card is drawn randomly from a pack of 52 playing cards.What is the probability of getting the number 8? P(getting the number 8) = 4/52 = 1/13 2)Peter is practising penalty kicks.He has scored 12 goals out of 30 trials.Find the empirical probability that Peter scores a goal while performing penalty kicks. P(Peter scores a goal while performing penalty kicks) = 12/30 = 2/5 3)According to the statistics of the past competitions,the probabilities for him to score a free throw.a 2-point shot and a 3-point shot are 4/5,3/4 and 2/3 respectively.In a competition,Bryan shot for 32 times,where 6 of them are 3- point shots and 16 of them are 2-point shots.If one point can be awarded for each successful free throw.find the expected value of Bryan's total score in the competition. The expected value of Bryan's total score in the competition = 6*3+16*2+(32-16-6)*4/5*1 = 18+32+8 = 58
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