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7. The probability that a person age 30 will survive to 80 is 0.08. The probability that a person age 10 will survive to

7. The probability that a person age 30 will survive to 80 is 0.08. The probability that a person age 10 will survive to age 30 is 0.8. 60% of the deaths between the ages of 10 and 40 occur after age 30. Find the probability that a person age 40 will survive to age 80.

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