问题
解答题
掷两枚普通的正六面体骰子,所得点数之和的所有可能如下表所示:
(2)你认为最有可能出现的点数之和是多少?请说明理由. |
答案
(1)P(点数之和是11)=
=2 36
.(4分)1 18
(2)最有可能出现的点数之和是7.(6分)
∵在所有可能出现的点数之和中,7是众数.(8分)
或:P(点数之和是7)=
,(7分)1 6
是所有可能出现的点数之和的概率的最大值.(8分)
掷两枚普通的正六面体骰子,所得点数之和的所有可能如下表所示:
(2)你认为最有可能出现的点数之和是多少?请说明理由. |
(1)P(点数之和是11)=
=2 36
.(4分)1 18
(2)最有可能出现的点数之和是7.(6分)
∵在所有可能出现的点数之和中,7是众数.(8分)
或:P(点数之和是7)=
,(7分)1 6
是所有可能出现的点数之和的概率的最大值.(8分)
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