E Test: Test #2 Question 7 of 10 This test: 50 point(s) possible This question: 4 point(s) possible Submit test The useful life of an electrical component is exponentially distributed with a mean of 1,000 hours. a. What is the probability the circuit will last more than 2,000 hours? b. What is the probability the circuit will last between 1,000 and 1,750 hours? c. What is the probability the circuit will fail within the first 500 hours? a. P(useful life more than 2,000 hours) = (Round to four decimal places as needed.) b. P(useful life between 1,000 and 1,750 hours) = (Round to four decimal places as needed.) c. P(useful life less than or equal to 500 hours) = (Round to four decimal places as needed.)