This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A car mechanic is thinking of guaranteeing customers that an oil change will take no more than 15 ... (Read 61 times)

WhattoUnderstand

  • Hero Member
  • *****
  • Posts: 517
on: Dec 3, 2019
A car mechanic is thinking of guaranteeing customers that an oil change will take no more than 15 minutes with a 99.73% confidence level. He takes a few samples of size 5 and finds the process mean to be 13 minutes with a standard deviation of .2 minutes and average sample range of 1.2 minutes. Find the A2, D4, and D3 values and use them to compute the upper and lower limits for an x-bar chart. Use the upper limit to determine if the mechanic can offer a 15 minute guarantee. Assume the mechanic plots the samples on the x-bar control chart and finds the process is in control, is there anything else the mechanic is missing to ensure the process is in control?
Operations Management (Canadian Edition) ¦ Heizer, Render, Griffin ¦ 1st Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by WhattoUnderstand on Dec 3, 2019

orangecrush

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Dec 3, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


WhattoUnderstand

  • Member
  • Posts: 517
Reply 2 on: Dec 3, 2019
Excellent

alvinum

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Earth Affects People; People Change Earth Earth Affects People; People Change Earth
Family interactions change in response to the developing child, and parenting characteristics, such ... Family interactions change in response to the developing child, and parenting characteristics, such ...
Climate Change in East Asia Climate Change in East Asia
How to solve any percent change problem How to solve any percent change problem
Ecological sensitivity to climate change Ecological sensitivity to climate change
A Critical Thinking Guide and Checklist A Critical Thinking Guide and Checklist
Video: Types of synapses - electrical & chemical

For a complete list of videos, visit our video library