SOA Exam P Sample Question 564
Study guide: Exam P-1
The length of an exchange student's phone call depends on whether the call is domestic or international. Lengths of domestic calls are exponentially distributed with a mean of 0.75 minutes, and lengths of international calls are exponentially distributed with a mean of 0.50 minutes. Each call has a 40% probability of being a domestic call and a 60% probability of being an international call.
Calculate the probability that the length of a randomly selected phone call by the student is between one and three minutes.
- A)
0.178 - B)
0.200 - C)
0.222 - D)
0.250 - E)
0.378
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