Consider a financial services salesperson whose annual salary consists of both a fixed portion of $25,000 and a variable portion that is a commission based on her sales performance. In particular, she estimates that her monthly sales commission can be represented by a random variable with mean $5000 and standard deviation $700.
Assuming that her sales commissions in different months are independent random variables, what is the standard deviation of her annual salary?
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发表于 2005-8-10 11:59:00
