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Math Help - Probability Problems

  1. #1
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    Unhappy Probability Problems

    Hi all,

    I am desperately in need of help on these problems. Please help. I am getting ready to fail this class and I dont want to.


    "5.62 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? (b) Neither will fail? (c) One or the other will fail? Show all steps carefully." (Doane and Seward, 2007, p. 203)


    "5.70
    The probability is 1 in 4,000,000 that a single auto trip in the United States will result in aHint: Assume independent

    fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of
    a fatal accident over a lifetime? Explain your reasoning carefully.
    events. Why might the assumption of independence be violated? (b) Why might a driver be
    tempted not to use a seat belt “just on this trip?" (Doane and Seward, 2007, p. 203)

    Sharon
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  2. #2
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    Quote Originally Posted by bmorrison09 View Post
    Hi all,

    I am desperately in need of help on these problems. Please help. I am getting ready to fail this class and I dont want to.


    "5.62 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? (b) Neither will fail? (c) One or the other will fail? Show all steps carefully." (Doane and Seward, 2007, p. 203)


    "5.70 The probability is 1 in 4,000,000 that a single auto trip in the United States will result in aHint: Assume independent

    fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of
    a fatal accident over a lifetime? Explain your reasoning carefully.
    events. Why might the assumption of independence be violated? (b) Why might a driver be
    tempted not to use a seat belt “just on this trip?" (Doane and Seward, 2007, p. 203)


    Sharon
    Read this thread: http://www.mathhelpforum.com/math-he...obability.html
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