一道英文统计学题目.求大神指导算Z的数值 成功率Question 3 Because of a severe drought in New South Wales, Farmer Giles needs to move his cows to another property in Victoria that has not been affected by the drought. It is kn
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一道英文统计学题目.求大神指导算Z的数值 成功率Question 3 Because of a severe drought in New South Wales, Farmer Giles needs to move his cows to another property in Victoria that has not been affected by the drought. It is kn
一道英文统计学题目.求大神指导算Z的数值 成功率
Question 3
Because of a severe drought in New South Wales, Farmer Giles needs to move his
cows to another property in Victoria that has not been affected by the drought. It
is known that a group of cows takes, on average, 16 days to make the trip
between the two farms. The time taken to make the trip is normally distributed
with a standard deviation of 2 days.
Farmer Giles has 100 cows in his herd. He can only manage to transport 20 cows
at a time. If it takes him exactly one day to return home after taking each group
of cows, how likely is it that he can transport his herd within 90 days?
一道英文统计学题目.求大神指导算Z的数值 成功率Question 3 Because of a severe drought in New South Wales, Farmer Giles needs to move his cows to another property in Victoria that has not been affected by the drought. It is kn
看不懂就是看不懂,百度你怎么这么多事,老子不会还不行啊,为了这点经验你用得着让我打这么多字吗,几天没用知道怎么有了最低字数限制了还?百度你妈的事也太多了吧.
这个就是算期望为80，标准差为10 P（X<86）的正态分布。
化成标准正态分布就是求P（x<0.6）查表有
P（x<0.6）=0.7257Z 值是1.34 查表tailed area 是0.91 （18-16.8）/2根号5。。。。根号不会打 不过还是谢谢了农夫回来的时间你要去掉，往返5次，要消耗4天时间，实际上运牛的时间是有86天。你没考虑这个吧。...
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这个就是算期望为80，标准差为10 P（X<86）的正态分布。
化成标准正态分布就是求P（x<0.6）查表有
P（x<0.6）=0.7257
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