[問題] 101台大商研關於Poi
題目如下:
Ellen is taking a typing lesson and her assingment is to type a 10-page
report in one hour. The number of typing errors she makes per page has
a Poisson distibution with mean of 浪打=2(抱歉我不會打那個符號)
What is the probability that Ellen does not make any typing error in one
randomly selected page?
這題我覺得計算上每一頁的浪打應該就是2/per page
可是解答寫說浪打應該是0.2/per page。
可是他倒數第二行不就寫she makes per page has a poisson distribution with
mean of 浪打=2嗎
為什麼他還要除以10，是解答寫錯還是我腦袋有問題?
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