# statistics

posted by .

A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour fight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the other will fail? Show all steps carefully

• statistics -

Pr(one)=.02
pr(both)=.02*.02
Pr(neither)=.98*.98
pr(one or other)=.02*.98+.98*.02

## Similar Questions

1. ### statistics

I cant figure this out, please explain. A certain airplane has (2) independent alternators to provide electrical power. The probablility that a given alternator will fail on a 1 hr flight is .02. What is the probability that (a) both …
2. ### Statistics

I have 2 statistics problems that I've done and felt completely confident with them until I worked the problem a different way and got a different answer. I was wondering if you could tell me if I have the right answers or not. Thanks …
3. ### Statistics

A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1- hour flight is .02. What is the probability that (a) both will fail?
4. ### Research & Evaluation I

I have an airplane that has an ignition system that works like this. There are 2 energy producing devices, called magnetos that "fire" the spark plugs, 2 per cylinder. There is a 1 in a 1000 chance that one will fail. What is the chance …
5. ### statistics

Thirty percent of all automobiles undergoing a headlight inspection at a certain inspection station fail the inspection. Among 15 randomly selected cars, what is the probability that at most four fail tha inspection?
6. ### statistics

I have an airplane that has an ignition system that works like this. There are 2 energy producing devices, called magnetos that "fire" the spark plugs, 2 per cylinder. There is a 1 in a 1000 chance that one will fail. What is the chance …
7. ### statistics

The Denver Post stated that 80% of all new products introduced in grocery stores fail (are taken off the market) within 2 years. If a grocery chain introduces 66 new products, what is the probability that within 2 years , 7 or more …
8. ### Maths

a missile guidance system has five fail-safe components. the probability of each failing is 0.05. find these probabilities. a) Exactly 2 will fail b) More than 2 will fail c) All will fail. d) Compare the answer for parts a, b, c, …
9. ### Statistics

A certain type of artificial heart has four independent, critical components.Failure of any one of these components is a serious problem that will cause the artificial heart to fail. The 5 year failure rate for each component follows: …
10. ### math

The probability that an airplane engine will fail in a transcontinental flight is 0.004. Assuming that engine failures are independent of each other, what is the probability that on a certain transcontinental flight, a four-engine …

More Similar Questions