设总体[tex=0.857x1.0]KGogyvwDAIJf/iL0H/9wjg==[/tex]的一组样本观测值为[tex=9.714x1.214]mUWcD9BhIx/5bwnf+56j53eyvFPrWCzZNIprLq8Yvzen6nwezH2+1/NfFmTVlPOS[/tex][br][/br]则样本均值[tex=1.357x0.857]NLkNFxYzuUeCR1RBJZ/FWQ==[/tex][input=type:blank,size:4][/input]，样本方差[tex=1.643x1.214]lGMlS9rZabPmgv41B9Nj4w==[/tex][input=type:blank,size:4][/input]
设总体[tex=0.857x1.0]KGogyvwDAIJf/iL0H/9wjg==[/tex]的一组样本观测值为[tex=9.714x1.214]mUWcD9BhIx/5bwnf+56j53eyvFPrWCzZNIprLq8Yvzen6nwezH2+1/NfFmTVlPOS[/tex][br][/br]则样本均值[tex=1.357x0.857]NLkNFxYzuUeCR1RBJZ/FWQ==[/tex][input=type:blank,size:4][/input]，样本方差[tex=1.643x1.214]lGMlS9rZabPmgv41B9Nj4w==[/tex][input=type:blank,size:4][/input]
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