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Math Help - Reliability (statistics)

  1. #1
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    Reliability (statistics)

    A manufacturer of mobile phones purchases electronic components as modules. The reliabilities of components differ by supplier.

    The reliablities of the components are as follows:

    Component A - Supplier 1 (.97) Supplier 2 (.92) Supplier 3 (.95)
    Component B - Supplier 1 (.85) Supplier 2 (.90) Supplier 3 (.90)
    Component C - Supplier 1 (.95) Supplier 2 (.93) Supplier 3 (.88)

    Which supplier should be selected if the mobile phone is to have the highest possible reliablity? Only one supplier should be chosen!

    Thanks in advance!
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  2. #2
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    Quote Originally Posted by dasani View Post
    A manufacturer of mobile phones purchases electronic components as modules. The reliabilities of components differ by supplier.

    The reliablities of the components are as follows:

    Component A - Supplier 1 (.97) Supplier 2 (.92) Supplier 3 (.95)
    Component B - Supplier 1 (.85) Supplier 2 (.90) Supplier 3 (.90)
    Component C - Supplier 1 (.95) Supplier 2 (.93) Supplier 3 (.88)

    Which supplier should be selected if the mobile phone is to have the highest possible reliablity? Only one supplier should be chosen!

    Thanks in advance!
    Supplier 1: Pr(no components fail) = (0.97)(0.85)(0.95) = ....

    Supplier 2: Pr(no components fail) = (0.92)(0.90)(0.93) = ....

    Supplier 3: .....

    Finish the calculations and draw a conclusion.
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  3. #3
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    so basically just multiply those 3 numbers and draw a conclusion based on which has the highest outcome?
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  4. #4
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    Quote Originally Posted by dasani View Post
    so basically just multiply those 3 numbers and draw a conclusion based on which has the highest outcome?
    Yes.
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