6-87  ƽ¯ϽһȷıĽǷӸֵĲʣͬһֻƽ¯Ͻеġÿһ¯ʱ⣬ͬñ׼һ¯Ȼý·һ¯ԺУ10¯ʷֱΪ
(1) ׼78.1  72.4  76.2  74.3  77.4  78.4  76.0  75.5  76.7  77.3
(2) ·  79.1  81.0  77.3  79.1  80.0  79.1  79.1  77.3  80.2  82.1
໥ҷֱ̬N(1,2)N(2,2)12ͦ2δ֪ʽ²ܷ߲ʣ(ȡ=0.05)
⣺巽ʱˮƽ=0.05¼裺H01H01<2
>> X=[78.1  72.4  76.2  74.3  77.4  78.4  76.0  75.5  76.7  77.3];
>>Y=[79.1  81.0  77.3  79.1  80.0  79.1  79.1  77.3  80.2  82.1];
>> [h,sig,ci]=ttest2(X,Y,0.05,-1)
ʾΪ
h =
     1
sig =
  2.1759e-004     %˵ֵȵĸʺС
ci =
      -Inf   -1.9083
H=1ʾˮƽ=0.05£Ӧþܾԭ裬Ϊ²˲ʣˣԭá
