[問題] 103 台大商研 假設檢定
如果是跟統計軟體有關請重發文章。
如果跟論文有關也煩請您重發文章。
請詳述問題內容，以利板友幫忙解答，過短文章依板規處置，請注意。
板上大家好
想請問一題關於假設檢定的問題
希望各位不吝指教( _ _ )
The winning percentage of Yankee in the last season was 0.568.
The assistant manager of Yankee, John, believes that the winning percentage
will be increased by recruiting 田中將大 as yankee's starting pitchers.
John estimates that the improved winning percentage by addtional 15% would
pay for the cost of such a recruitment. Any further increase in winning
percentage would create an extra profit gain.
John would like to test his belef that recruiting 田中將大 would lead to
a positive effect on profit. Please answer the following questions.
1.To examine John's belief, the null hypothesis is
a) Ho: p=0.568 b) Ho: p<=0.568 c) Ho: p>0.568 d) Ho: p=0.718 e) Ho: p<=0.5
2.If the winning percentage of the first season with 田中將大 serving as the
starting pitcher approaches 0.680, then which alternative hypothesis should
John use to test his belief?
a) Ha: p>0.680 b) Ha: p/=0.680 c) Ha: p>0.718 d) Ha: p/=0.718 e) Ha: p/=0.568
我的想法是 聘請田中將大後 如果要有正的利潤 至少勝率要>=0.718 (0.568+0.15)
所以Ho: p<=0.718, Ha: p>0.718 但沒有這個選項...
以上 謝謝各位大神耐心看完 ><
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 202.89.121.16
※ 文章網址: https://www.ptt.cc/bbs/Statistics/M.1421717995.A.A20.html
推
04/21 11:56, , 1F
04/21 11:56, 1F
推
04/21 12:02, , 2F
04/21 12:02, 2F