管理經濟 樂觀預期vs 悲觀預期 預期價格 - 經濟

學校: 成功大學

教師: 陳俊男

科目: EMBA管理經濟 Hirschey 11版 第二章習題 第7題 page56

題目:如下英文

我的想法:

題目大致在敘述
樂觀時，2億
悲觀時，1億
但好像都是10%，看不太懂題目的意思
麻煩高手能幫忙解惑，謝謝囉！

The manager of the aerospace division of General Aeronautics estimates
the price it can charge for providing satellite launch services to commercial
firms.

Her most optimistic estimate ( a price not expected to be exceeded more than
10 percent of the time) is $2 million.

Her most pessimistic estimate ( a lower price than this one is not expected
more than 10 percent of the time) is $1 million.

The price distribution is believed to be approximately normal.

a.What is the expected price?
b.What is the standard deviation of the launch price?
c.What is the probability of receiving a price less than $1.2 million?

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