ขอรบกวนเพื่อนๆ พี่ๆ น้องๆ ช่วยแปลโจทย์ข้อนี้ให้ทีครับ >_<
Under an insurance policy, a maximum of five claims may be filed per year
by a policyholder. Let Pn be the probability that a policyholder files n claims
during a given year, where n = 0, 1, 2, 3, 4, 5. An actuary makes the following
observations:
(i) Pn >= Pn+1 for 0 <= n <= 4
(ii) The difference between Pn and Pn+1 is the same for 0 <= n <= 4
(iii) Exactly 40% of policyholders file fewer than two claims during a given
year.
Calculate the probability that a random policyholder will file more than three
claims during a given year.
[Answer: 0.267]
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