Normal curve-the mean time between failures

Assignment Help Operation Management

Reference no: EM13857041

1) The component designer for a major off the road vehicle manufacturer estimates that she can (a) increase the average time between failures of a part by 5%, or (b) reduce the average repair time by 10%. Currently, the average time between failures is 100 hours and the average repair time is 4 hours. Which option would be result in higher Availability? Show all calculations.

2) The service life of automobile tires is modeled by a normal curve; the Mean Time Between Failures (MTBF) is 20,000 miles and the standard deviation is 800 miles. Use Table B in Appendix B (page 868 and 869) to solve these problems (text book: operation Management, 12 ed: by william J.)

a) Determine the probability that a tire will fail before 22,000 miles.

b) Determine the probability that a tire will last at least 19,000 miles

c) The manufacturer wishes to provide a warranty on which he will be obligated to make a replacement of only 1% of the tires sold. For how many miles should he warrant the tires?

Reference no: EM13857041

Questions Cloud

Define the term hacking : Define the term hacking.

Assignment on ecommerce risks and threats : Based on your Reading Chapter 5, and the learning activities where you practiced with risks and threats in ecommerce, respond to the checklist items in an informative essay.

Hydraulic system comprised of a reservoir and a pump : In a hydraulic system comprised of a reservoir and a pump which is 4 ft above the oil level, what would be the pressure at the outlet of the pump, if the frictional effects are neglected and the flow rate is 4 gpm

Optimal values of decision variables and objective function : First, what happens to the slope of the objective function when one of its parameter coefficients changes? If a parameter coefficient in the objective function changes too much in one direction, then elaborate upon whether it is possible for a new "c..

Normal curve-the mean time between failures : The component designer for a major off the road vehicle manufacturer estimates that she can (a) increase the average time between failures of a part by 5%, or (b) reduce the average repair time by 10%. The service life of automobile tires is modeled ..

Best way to evaluate process technologies : What is the best way to evaluate process technologies? Why? Think about the layout of different grocery stores you have visited. Where are the different departments located? Why do you think they are arranged in this order

How much is the savings bond exclusion : Starting in 2004, Chuck and Luane have been purchasing Series EE bonds in their name to use for the higher education of their daughter Susie, who currently is age 18. During the year, they cash in $12,000 of the bonds to use for freshman year tuition..

How many bits are there in the operation code : How many bits are there in the operation code, the register code part, and the address part? Draw the instruction word format and indicate the number of bits in each part.

What are the pros and cons of this practice : Direct-to-consumer advertising for pharmaceuticals is a pull strategy designed to get consumers to ask their doctors to prescribe certain medications. What are the pros and cons of this practice? Are there always pros and cons to a pull strategy? Wha..

User Account

All Pages