99原特四等 統計學概要 - 考試
By Tristan Cohan
at 2015-12-29T11:44
at 2015-12-29T11:44
Table of Contents
題目：
某銀行電話理專每天打電話推銷商品，根據過去經驗，平均每5人有1人會購買，
設該理專的目標為每天推銷3人，因時間有限，每天至多只能打10通電話，若在
10通電話中有3人購買，則隨即停止推銷。試問：
(一)某天在第8通後，即停止推銷的機率？
(二)某天無法達成目標的機率？
注意：此題僅需列出求算式子，不用算出答案。
想法:
我想問的是第二小題
https://goo.gl/U8Qm6X
謝謝
--
某銀行電話理專每天打電話推銷商品，根據過去經驗，平均每5人有1人會購買，
設該理專的目標為每天推銷3人，因時間有限，每天至多只能打10通電話，若在
10通電話中有3人購買，則隨即停止推銷。試問：
(一)某天在第8通後，即停止推銷的機率？
(二)某天無法達成目標的機率？
注意：此題僅需列出求算式子，不用算出答案。
想法:
我想問的是第二小題
https://goo.gl/U8Qm6X
謝謝
--
Tags:
考試
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