1.The winning team scores 3 points and the losing team scores nothing in a football match. If two teams draw,each of them scores 1 point . The probability for Tiger Team to win, draw and lose in a match are 0.4 , 0.3 and 0.3 respectively.
(a) Find the expected value of the scores obtained by the team in each match.
(b) Estimate the total scores obtained by the team after 20 matches.
probability about maths
2008-01-27 4:42 am
回答 (1)
2008-01-27 4:54 am
✔ 最佳答案
(a)The expected value of the scores obtained by the team in each match
=0.4*3+0.3*1+0.3*0
=1.5
(b)
the total scores obtained by the team after 20 matches
=20*1.5 (since all matchs are independent)
=30
收錄日期: 2021-04-25 16:54:26
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