[問題] 關於random interval
Let x(x的上面有一條線)denote the mean of a random sample of size n from a
distribution that has mean u and variance 母體變異數(因為符號打不出來所以先
用中文打)=10.Find n so that the probability is approximately 0.954 that the
random interval( x(上面有一條線)-0.5,x(上面有一條線)+0.5)includes u.
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