A teacher gives a third grade class of n=16 a vocabulary test at the beginning of the school year.To evaluate the changes that occur during the year, students are tested again at the end o the year.Their test scores reveled an average improvement of MD=5.7 points with s(平方)=144. Does this constitute a significant improvment? Use a one-tailed an alpha level of .05. 以上是題目 拜託各位幫我解答一下疑問 感激 -- 夫兵者不祥之器物或惡之故有道者不處君子居則貴左用兵則貴右兵者不祥之器非君子 之器不得已而用之恬淡為上勝而不美而美之者是樂殺人夫樂殺人者則不可得志於天下 矣吉事尚左凶事尚右偏將軍居左上將軍居右言以喪禮處之殺人之眾以哀悲泣之戰勝以 喪禮處之道常無名樸雖小天下莫能臣侯王若能守之萬物將自賓天地相合以降甘露民莫 之令而自均始制有名名亦既有夫亦將知止知 220-141-138-139.dynamic.hinet.net海