NO.PZ2023060502000005
问题如下：
The probability distribution for a company’s sales is:
The standard deviation of sales is closest to which of the following?
选项：
A.USD9.81 million.
USD12.20 million.
USD32.40 million.
解释：
A is correct. The analyst must first calculate expected sales as 0.05 × USD70 +
0.70 × USD40 + 0.25 × USD25 = USD3.50 million + USD28.00 million + USD6.25
million = USD37.75 million.
After calculating expected sales, we can calculate the variance of sales:
有什么便捷的财务计算器使用方式吗？
