SOA Exam P Sample Question 634
Study guide: Exam P-1
A customer uses an ATM. Let Y be the time that the customer spends waiting in line before reaching the ATM. Let Z be the time that the customer spends at the ATM performing the transaction. Y and Z are independent random variables. Let X = Y + Z.
Assume the following:
i) E(X) = 2.00
ii) \text{Var}(X) = 2.25
iii) E(Y) = 1.20
iv) \text{Var}(Y) = 0.90
Calculate the coefficient of variation for Z.
- A)
0.59 - B)
0.69 - C)
1.16 - D)
1.35 - E)
1.45
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