五、假設某藥劑的藥效服從常態分布 N ( µ , σ 2 ) 。現有此藥劑的藥效之隨機樣本，樣本數為 20，樣本平均值為 6，樣本標準差為 2。【題組】 ⑴若已知 σ 2 = 5 ，在顯著水準 α =
【題組】 ⑶若σ2 未知，試建構信賴係數為 98％的 µ 之信賴區間。（15 分）註：隨機變數 Z 表示標準常態分布 N (0,1) ， T 表示 t v 分布且有自由度 v 。令P(Z ＞ zα )
2. Brian is a man of his word. Once he makes a p____e, he will try his best to keep it no matter wha
3. There are a lot of c________es to meet during the first year of senior high. For example, to keep
4. Feeling ill in class, I went to school health center. After taking my t_______e, the nurse told m
7. Instead of going to the supermarket far way from my house, I usually buy my basic needs in the g_
8.When you receive the package, make sure that the items contained in it c d with those on the lista
10. My little sister s_____med at the sight of a cockroach in her bedroom last night. Hearing her lo
13. With my teachers’ tolerance and (encourage), I decide to get rid of the bad habit of skippingcla