按这张概率表算下+到10平均要多少次?+1~+4 100% +4~+5 73.71%+5~+6 68.16% +6~+7 41.76% +7~+8 69.51%+8~+9 55.65% +9~+10 56.25%+5~+7失败后降1,+8~+10失败后归0初始为0每次+1 应该用系统概率分析法做吧,
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 02:35:26
![按这张概率表算下+到10平均要多少次?+1~+4 100% +4~+5 73.71%+5~+6 68.16% +6~+7 41.76% +7~+8 69.51%+8~+9 55.65% +9~+10 56.25%+5~+7失败后降1,+8~+10失败后归0初始为0每次+1 应该用系统概率分析法做吧,](/uploads/image/z/13893316-52-6.jpg?t=%E6%8C%89%E8%BF%99%E5%BC%A0%E6%A6%82%E7%8E%87%E8%A1%A8%E7%AE%97%E4%B8%8B%2B%E5%88%B010%E5%B9%B3%E5%9D%87%E8%A6%81%E5%A4%9A%E5%B0%91%E6%AC%A1%3F%2B1%EF%BD%9E%2B4+100%25+%2B4%EF%BD%9E%2B5+73.71%25%2B5%EF%BD%9E%2B6+68.16%25+%2B6%EF%BD%9E%2B7+41.76%25+%2B7%EF%BD%9E%2B8+69.51%25%2B8%EF%BD%9E%2B9+55.65%25+%2B9%EF%BD%9E%2B10+56.25%25%2B5%EF%BD%9E%2B7%E5%A4%B1%E8%B4%A5%E5%90%8E%E9%99%8D1%2C%2B8%EF%BD%9E%2B10%E5%A4%B1%E8%B4%A5%E5%90%8E%E5%BD%920%E5%88%9D%E5%A7%8B%E4%B8%BA0%E6%AF%8F%E6%AC%A1%2B1+%E5%BA%94%E8%AF%A5%E7%94%A8%E7%B3%BB%E7%BB%9F%E6%A6%82%E7%8E%87%E5%88%86%E6%9E%90%E6%B3%95%E5%81%9A%E5%90%A7%EF%BC%8C)
按这张概率表算下+到10平均要多少次?+1~+4 100% +4~+5 73.71%+5~+6 68.16% +6~+7 41.76% +7~+8 69.51%+8~+9 55.65% +9~+10 56.25%+5~+7失败后降1,+8~+10失败后归0初始为0每次+1 应该用系统概率分析法做吧,
按这张概率表算下+到10平均要多少次?
+1~+4 100%
+4~+5 73.71%
+5~+6 68.16%
+6~+7 41.76%
+7~+8 69.51%
+8~+9 55.65%
+9~+10 56.25%
+5~+7失败后降1,+8~+10失败后归0
初始为0每次+1 应该用系统概率分析法做吧,
有没有人会啊,我积分都用上了啊
按这张概率表算下+到10平均要多少次?+1~+4 100% +4~+5 73.71%+5~+6 68.16% +6~+7 41.76% +7~+8 69.51%+8~+9 55.65% +9~+10 56.25%+5~+7失败后降1,+8~+10失败后归0初始为0每次+1 应该用系统概率分析法做吧,
+4 需要3
+5平均需要1/0.7371=1.3567
+6平均需要(1+0.3184*1.3567)/0.6816=2.1009
+7平均需要(1+0.5824*2.1009)/0.4176=5.3246
+8平均需要(1+0.3049*5.3246)/0.6951=3.7742
+9平均需要(1+15.5564*0.4435)/0.5565=14.1957
+10平均需要(1+29.75097*0.4375)/0.5625=24.9174
到10平均要:3+1.3576+...+24.9174=54.6695