Determine the ucl and lcl for the x-bar

Assignment Help Operation Management

Reference no: EM13235808

Checkout time at a supermarket is monitored using a range and mean chart. Six samples which contain 20 observations per sample have been collected and the sample means and sample ranges have been computed as shown below:

Sample Mean Range

1 3.05 0.42
2 3.01 0.44
3 3.11 0.39
4 3.45 0.49
5 4.11 0.53
6 3.09 0.45

Determine the UCL and LCL for the X-Bar and the R-Chart for the sample size of 6.

Reference no: EM13235808

Questions Cloud

Explain what is the apparent activation barrier : Milk spoils about 5x as fast at 300 K as it does at 250 K. What is the apparent activation barrier for the "milk spoiling" reaction

Explain why veras preferences are of very special type : Vera is an impoverished graduate student who has only $100 a month to spend on fodd. She has read in a government publication that she can assure an adequate diet by eating only peanut butter and carrots in the fixed ratio

State the ground state electron configuration : write the ground state electron configuration( using molecular orbital theory) for o2 and show that it is paramagnetic.

Dns is a commonly used service in the internet : 1> DNS is a commonly used service in the Internet. Explain the roles of the local name servers, the authoritative name servers, and the root name servers.

Determine the ucl and lcl for the x-bar : Checkout time at a supermarket is monitored using a range and mean chart. Six samples which contain 20 observations per sample have been collected and the sample means and sample ranges have been computed as shown below.

Explain the net ionic equation to show the formation salt : Write the net ionic equation to show the formation of a precipitate (insoluble salt) when the following solutions are mixed. Write noreaction if no insoluble salt forms

How to make the down payment and the quarterly payments : An automobile is priced at $ 7,000. A buyer may purchase the car for $ 6,500 now, or alternatively, the buyer can make a down payment of $ 1,000 now and pay the remaining $ 6,000 in eight equal quarterly payments ( over 2 years)

What will make alternative2 equaly desirable to alternative1 : Your money is tied up and you need to borrow $ 10,000. The following two alternatives are being offered by the lender: ( 1) pay $ 3,288.91 at the end of each year for 5 years, starting at the end of the first year

What is a dmz and what is it used for : Write a password policy that your company will have to follow to ensure strong passwords.Describe some of the types of attacks that can be launched against a network.What is a DMZ, and what is it used for?

User Account

All Pages