题型:单选题 题类:常考题 难易度:普通
投篮次数(n) |
50 |
100 |
150 |
200 |
250 |
300 |
500 |
投中次数(m) |
28 |
60 |
78 |
104 |
123 |
152 |
251 |
投中频率( ) | 0.56 | 0.60 | 0.52 | 0.52 | 0.49 | 0.51 | 0.50 |
每批粒数n | 10 | 50 | 100 | 500 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 |
发芽的频数m | 9 | 44 | 92 | 461 | 928 | 1396 | 1866 | 2794 | 3728 | 4646 |
发芽的频率(精确到0.001 | 0.900 | 0.880 | 0.920 | 0.926 | 0.928 | 0.931 | 0.933 | 0.931 | 0.932 | 0.929 |
则估计这种绿豆发芽的概率为{#blank#}1{#/blank#}(精确到0.01)
试题篮