A medical screening program administers three independent fitness tests. Of the persons taking the tests, 80% pass test I, 75% pass test II, and 60% pass test III. A participant is chosen at random
What is the probability that she will pass at least 2 of the 3 tests?
A tv set contains five circuit boards of type A, five of type B, and three of type C. The probability of failing in its first 50000 hours of use is .01 for type A, .02 for type B, and .025 for type C. Assuming that the failures of the various circuit boards are independent of one another, compute the probability that no circuit board fails in the first 5000 hours of use.
The pobability that a person A and a person B will live an additional 15 years are .8 and .7 respectively. Assuming that their lifespans are independent, what is the probability that A or B will live an additional 15 years?
If you know how to solve please show your work so that I can learn how to do it THANK YOU
2007-04-26
17:42:10
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4 answers
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Mathematics