BUSI 411 Operations Management Ch 4

11t1212014 Assignment Print View

award:

1 . 3.33 points

award: O 3.33 oointsz-.

Prablem 4S-5 The guidance system of a ship is contrdled by a computer that has three major modules. ln order for the computer to function properly, dl thrce modules must function. Two of the modules have reliabilities of .94, and the other has a diability sf .97-

a. What is the reliability d the compute# (Round your answer to 4 decimal places.)

Reliability

b. A backup computer identicd to the one beirg used will be installed to improve overall reliability. Assuming the ner,v comsrter autsndicdly functims if the main one fails, determine the resulting reliability. (Round your intermediate calculations and final answers to 4 decimal places.)

Reliability

c. lf the backup computer must be *tivated by a switch in the event that the first computer fails, and the switch has a reliability of .98, what is the ovsall rdiability of tfe systern? iBoth the switch and the backup computer must function in oder for the backup to take over.) (Round your intermediate calculations and final ansrverc to 4 decimal places.)

Rdiability

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Learning Objective: 045-02 Problem 4S-5 Perform simple reliability

computations.

Problem 4S-19 Determine the availability for each of these cases:

a. MTBF = 55 days, avefiage repair time = 7 days. (Round your answer to 2 decimal places.)

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