Business, 31.03.2021 01:00 umarhaley

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 1,197.50 mm and an upper specification unit (USL) of 1,202.50 mm. A simple random sample of 320 finished ball bearings, which were produced by an approximately normally distributed process, has the sample average of 1,199.70 mm and the sample standard deviation of 0.90 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 specifications, and the other for variations.
(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 ball bearings, what would you say to the manufacturer?

Answers: 3

Show answers

Another question on Business

Business, 22.06.2019 09:00

You speak to a business owner that is taking in almost $2000 in revenue each month. the owner still says that they are having trouble keeping the doors open. how can that be possible? use the terms of revenue, expenses and profit/loss in your answer

Answers: 3

Answer

Business, 22.06.2019 09:20

Which statement best explains the relationship between points a and b? a. consumption reaches its highest point, and then supply begins to fall. b. inflation reaches its highest point, and then the economy begins to expand. c. production reaches its highest point, and then the economy begins to contract. d. unemployment reaches its highest point, and then inflation begins to decrease.

Answers: 2

Answer

Business, 22.06.2019 19:00

The following are budgeted data: january february march sales in units 16,200 22,400 19,200 production in units 19,200 20,200 18,700 one pound of material is required for each finished unit. the inventory of materials at the end of each month should equal 20% of the following month's production needs. purchases of raw materials for february would be budgeted to be:

Answers: 3

Answer

Business, 22.06.2019 19:00

1. what must one do to perform the essential managerial task of controlling in achieving organizational goals? a. motivate, coordinate, and energize individuals and groups to work together to achieve organizational goals b. choose appropriate organizational goals and courses of action to best achieve those goals c. establish task and authority relationships that allow people to work together to achieve organizational goals d. establish accurate measuring and monitoring systems to evaluate how well the organization has achieved its goals

Answers: 1

Answer

You know the right answer?

A ball bearing design for wheel assemblies used in giant mining dump trucks requires the inner diame...

Questions