Actuarial Notes

SOA Exam P Sample Question 385

Study guide: Exam P-1

A computer manufacturer collects data on how long it takes before its computers fail. The time to fail, in years, follows an exponential distribution. Twenty percent of its computers fail within two years.

The probability a randomly selected computer fails before time t, in years, is 0.80.

Calculate t.

  • A) 3.6
  • B) 7.2
  • C) 8.0
  • D) 14.4
  • E) 16.0

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