[商管] [統計]-gamma分配
這是hogg那本 probability and statistical inference 8e 的 3.5-19
A bakery sells rolls in units of a dozen. The demand X (in 1000units)
for rolls has a gamma distribution with parameters α=3, θ=0.5. It costs
40 cents to make a unit that sells for ＄1 on the first day when the rolls
are fresh. Any leftover units are sold on the second day at 20 cents. How
many units should be made to maximize the expected value of the profit?
這題答案是：
1.96 yields an expected profit of ＄660.99
基本上我除了列出gamma分配之外，就不知道該怎麼辦了 Orz
有人知道怎麼做嗎？ 謝謝
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