It is true no one ever comes into the same river

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• （英语）统计学证明问题you demonstrated that for the two-group permutation test,the same p-value resulted,regardless of whether the difference in means or the mean of one of the samples was used as the test statistic.Prove that this is true in general,i.e.,that using the mean of one sample as test statistic must yield the same p-value as using the mean difference我题目意思并不完全了解,也不知道应该怎么证明,
• The book The Origin of Species by Charles Darwin is probably one of the most famous books ever written by a scientist.Yet it is a book which the writer did not want to publish; he only agreed to make his theory known to the public when he was forced to by his friends.1.Which of the following is true of the book The Origin of Species?A.Charles Darwin wrote it to make his new theory known to the public.B.It is one of the greatest scientific books.
• 三道英语选择题求解答1.He proved himself a ____ successor to the former Prime Minister.A.worthwhile B.worthiness C.worthy D.worth2.The Channel Tunnel is one of the biggest engineering projects ever _____ .A.understated B.undertaken C.undergone D.underneath3.He comes from a poor country village in the mountains, so it's very hard for him to pay the whole school year's ____ at one time.A.money B.fare C.fees D.tuition
• 32.True friendship is like sound health,whose value is seldom known_______it is lost.C.until D.unless26.We are ensured that there are enough textbooks for each student to have _______ when the new semester comes.A.it C.one 27.— She looks very happy.She _______ have passed the exam.— I guess so.It’s not difficult after all.C.must D.might38.— Did you take enough money with you?— Yes,but I spent _______ I had expected.A.not so many as B.as many as C.much
• 英语翻译The numbers 1,2,3,4,5 are to be arranged in a circle.An arrangement is bad if it is not true that for every from to one can find a subset of the numbers that appear consecutively on the circle that sum to .Arrangements that differ only by a rotation or a reflection are considered the same.How many different bad arrangements are there?主要是第二句看不太懂,The numbers 1,2,3,4,5 are to be arranged in a circle.An arrangement is bad if it is not true that for ev
• There is a bridge over a mountain valley.It is the only way over the valley.Under it,there is a river.The water in the river is very fast.One day,two goats come.One wants to go to the west and the other wants to go to the east.Then they meet in the middle.The bridge is very narrow.They can’t go across at the same time.But neither of them wants to go back to let the other go first.They stand horn to horn.Then they begin to fight.At last both of them fa
• 请各位解答一下下面几道英语题1.Have you ever seen the film _______________(direct) by Zhang Yimou .2.I think it's one of ______(enjoy) trips in my life.3.他每天总是第一个来最后一个走.He is always ___________________________, and__________________.4.黄河是中国第二长河.The Yellow River is _________________in China.5.罗斯比苏珊高十公分.Rose is __________________________ Susan.6.什么也阻止不了我去那儿.Nothing can _____________________________there.7.Traveling by train is _ excited than a rushed trip by air. A.mu
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• 请帮我做一篇英语完形填空吧.并简要说明下原因.As an American writer,Mark Twain,once said,"Everyone talks about the weather,but nobody 1 anything about it." It is true that everybody talks about the weather.Many people begin their talks 2 saying:"Isn't it a nice 3 " "Do you think it will rain?" "I think it's going to snow"\x05Many people think they can tell 4 the weather is going to be like.But they 5 ever agree with each other.One man may say,"Do you see how cloudy it is in
• Today Mike is playing near a river.Suddenly,his knife goes into the water.阅读理解.Today Mike is playing near a river.Suddenly,his knife goes into the water.He likes the knife very much.Now it’s lost.So he is very sad.Then an old woman comes up and asks Mike what is wrong.“I lost my knife.” He says.The old woman gives him a gold knife and asks “Is it your knife?” “No,” says the boy.The old woman gives him a silver knife and asks again “ And this one?” “No
• nothing will ever be the same
• lf you want____jazz,please go to the Fantastic House.A.listenB.hearC.to list