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!

Quote:

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Originally Posted by dasani

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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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.

so basically just multiply those 3 numbers and draw a conclusion based on which has the highest outcome?

Quote:

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Originally Posted by dasani

so basically just multiply those 3 numbers and draw a conclusion based on which has the highest outcome?

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Yes.