# Reliability (statistics)

• Nov 18th 2008, 09:46 PM
dasani
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!

• Nov 19th 2008, 02:46 AM
mr fantastic
Quote:

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!

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.
• Nov 19th 2008, 06:26 AM
dasani
so basically just multiply those 3 numbers and draw a conclusion based on which has the highest outcome?
• Nov 19th 2008, 01:56 PM
mr fantastic
Quote:

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

Yes.