[問題] uniform probability distribution

看板Statistics作者 (草莓獸)時間12年前 (2013/12/09 15:47), 編輯推噓2(2推 0噓 1→)
留言3則, 2人參與, 最新討論串1/1
1. Delta Airlines quotes a flight time of 2 hours, 5 minutes for its flights from Cincinnati to Tampa. Suppose we believe that actual flight times are uniformly distributed between 2 hours and 2 hours, 20 minutes. a. What is the probability that the flight will be no more than 5 minutes late? b. What is the probability that the flight will be more than 10 minutes late? a.我的算法125-120/20=0.25 但是答案0.5 b.140-130/20 答案0.25 請問錯在哪?? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.115.214.9
推
12/09 16:26, , 1F
1.(125＋5－120)/20=0.5；2. 1-(125＋10－120)/20=0.25
12/09 16:26, 1F
→
12/09 17:04, , 2F
不好意思 可解釋一下嗎??
12/09 17:04, 2F
推
12/09 17:25, , 3F
1.誤點不超過5分鐘；2.誤點超過10分鐘！
12/09 17:25, 3F
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