6-86  ĳֵԪX(Сʱ)ֲ̡̬2δֲ֪16ֻԪ
159   280   101   212   224   379   179   264   222   362   168   250
149   260   485   170
ǷΪԪƽ225(Сʱ)
⣺δ֪2ˮƽ=0.05¼裺H0<0=225H1>225
>> X=[159 280 101 212 224 379 179 264 222 362 168 250 149 260 485 170];
>> [h,sig,ci]=ttest(X,225,0.05,1)
ʾΪ
h =
     0
sig =
    0.2570
ci =
  198.2321       Inf       %ֵ225ڸ

H=0ʾˮƽ=0.05ӦýԭH0ΪԪƽ225Сʱ
