Reference no: EM131931664
QUESTION - Process Capability Indexes
A ball bearing design for wheel assemblies used in giant mining dump trucks requires the inner diameter to have a lower specification unit (LSL) of 1014.50 mm and an upper specification unit (USL) of 1017.50 mm.
A simple random sample of 240 finished ball bearings, which were produced by an approximately normally distributed process, has the sample average of 1015.70 mm and the sample standard deviation of 0.48 mm.
A too small inner diameter is especially not good because the ball bearing cannot be fitted into a regular axle.
You would need to use 3 decimals in the following calculations.
(a) Draw a diagram of two scales, one for specification, and the other for production.
(b) Give an equation for the process capability index Cp, calculate and interpret it.
(c) Give an equation for the upper one-sided index Cpu, calculate and interpret it.
(d) Give an equation for the lower one-sided index Cpl, calculate and interpret it.
(e) Give an equation for the process capability index Cpk, calculate and interpret it.
(f) Among the above 4 indexes, which one is the most closely watched? Explain your answer.
(g) If you are the buyer of those 240 ball bearings, what would you say to the manufacturer?
|
What about the worst at imitating
: Based on what you've read so far, which brain functions do you think would computers be the best at imitating? What about the worst at imitating?
|
|
What is the efficiency of the balance
: Draw the precedence diagram to illustrate the precedence relationship?What is the theoretical minimum number of stations?
|
|
How much gross fixed assets did buy
: ABC started the year with 3,001,000 of net fixed assets and ended the year with 3,209,000 of net fixed assets. Depreciation expenses during the year were.
|
|
Advent of modern imaging techniques
: Before the advent of modern imaging techniques, scientists and clinicians relied on autopsies of people who suffered brain injury with resultant change
|
|
Give an equation for the process capability index cp
: Draw a diagram of two scales, one for specification, and the other for production.Give an equation for the process capability index Cp, calculate it.
|
|
How much would need to raise in given problem
: ABC purchases $454,000 worth of goods from its supplier each year on terms of 1/10, net 30 and currently does not take the discount.
|
|
Build journal entries to record the issuance of the bonds
: Build journal entries to record the issuance of the bonds and the interest payments for 2016 and 2017 using the straight-line method.
|
|
Organizing effects and activating effects
: What is the difference of organizing effects and activating effects? List some examples of both effects on males and females.
|
|
Identify fusion marketings digital applications
: BSBMGT407 - Apply Digital Solutions to Work Processes - Identify Fusion Marketings digital applications and Locate and use digital information on intellectual
|