Refer to the failure data for the equipment maintenance in ”Question 6”. What pr

Question

Refer to the failure data for the equipment maintenance in ”Question 6”. What preventive maintenance period would you recommend if the preventive maintenance cost were $60 and the average costs for an equipment failure were $40? How many breakdowns a year should you expect under your preventive maintenance program? Assume that maintenances can not be left completely out. Historical data on time between failures Hours Between Failures Probability 25-30 0.2 30-35 0.4 35-40 0.3 40-45 0.1

Historical data on time between failures Hours Between Failures Probability 0.2 25-30 0.4 30-35 35-40 0.3 40-45 0.1 TABLE 13.3 Historical data on time between failures Hours Between Failures Probability 02 25-30 30-35 35 40 0,3 40-45

Explanation / Answer

here

hence expected failure =34

failures mid point(x) P(x) xP(X) 25-30 27.5 0.2 5.5 30-35 32.5 0.4 13 35-40 37.5 0.3 11.25 40-45 42.5 0.1 4.25 total 34

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

---