淇濋櫓绮剧畻璇惧悗涔犻绛旀
銆愮瘒涓�锛氫繚闄╃簿绠楁潕绉�鑺?/p>
1-5
绔犱範棰樼瓟妗堛�?/p>
缁欏嚭鐢熷瓨鍑芥暟
s?x??e
x22500
锛屾眰锛?/p>
(1)
浜哄湪
50
宀侊綖
60
宀佷箣闂存浜＄殑姒傜巼銆?/p>
(2)50
宀佺殑浜哄湪
60
宀佷互鍓嶆
浜＄殑姒傜巼銆?/p>
(3)
浜鸿兘娲诲埌
70
宀佺殑姒傜巼銆?/p>
(4)50
宀佺殑浜鸿兘娲诲埌
70
宀佺殑
姒傜巼銆?/p>
p(50?x?60)?s?50??s(60)
10q50?
s?50??s(60)
s(50)
p(x?70)?s(70)
s?70?s(50)
3/2
20p50?
2.
宸茬煡鐢熷瓨鍑芥暟
s(x)=1000-
x,0鈮鈮?00
锛屾眰锛?/p>
1
锛?/p>
f
锛?/p>
x
锛?/p>
(2)f(x)(3)ft(t)(4)ft(f)(5)e(x)
3.
宸茬煡
pr
锛?/p>
5
锛?/p>
t(60)鈮?
锛?/p>
=0.1895
锛?/p>
pr
锛?/p>
t(60)
锛?/p>
5
锛?/p>
=0.92094
锛屾眰
q65
銆?/p>
5|q60?
s?65??s(66)s?65?
0.1895,5p600.92094
s(60)s(60)
s?65??s(66)
q650.2058
s(65)
=0.70740/0.86786=0.81511
5.
缁欏嚭
45
宀佷汉鐨勫彇鏁翠綑鍛藉垎甯冨涓嬭〃锛?/p>
姹傦細
1
锛?/p>
45
宀佺殑浜哄湪
5
骞村唴姝讳骸鐨勬鐜囷紱
2
锛?/p>
48
宀佺殑浜哄湪
3
骞村唴姝?/p>
浜＄殑姒傜巼锛?/p>
3
锛?/p>
50
宀佺殑浜哄湪
52
宀佽嚦
55
宀佷箣闂存浜＄殑姒傜巼銆?/p>
(1)5q45=
锛?/p>
0.0050+0.0060+0.0075+0.0095+0.120
锛?/p>
=0.04
6.
杩欓
so easy
灏辫嚜宸辩畻鍚?/p>
7.
璁句竴涓汉鏁颁负
1000
鐨勭幇骞?/p>
36
宀佺殑缇や綋锛屾牴鎹湰绔犱腑鐨勭敓鍛借〃璁?/p>
绠楋紙鍙栨暣锛?/p>
q80?