Question

An online shopping website ships on average 11,000 orders each day. At the present time, about 55 out of 1000 shipped orders are shipped with the incorrect merchandise. As part of an effort to reduce errors in the fulfillment of orders, robots have been inserted into the process of filling orders. You will monitor the proportion of incorrect orders discovered each day and determine if the robots improve the process.

What type of control chart will you use?

1)We would use a ? chart.

2)We would use an ?¯ chart.

3)We would use an ? chart.

4)We would use an ? chart.

What are the initial center line and control limits? (Enter your answers rounded to three decimal places.)

initial center line =

???=

???=

If there has been an improvement, what do you expect to see on the control chart?

1)If there has been an improvement due to implementing robots to reduce errors, then you would expect to see an upward trend for the chart data points.

2)If there has been an improvement due to implementing robots to reduce errors, then you would expect to see a downward trend for the chart data points.

3)If there has been an improvement due to implementing robots to reduce errors, then you would expect to see all the points lying close to the center line.

4)It is unlikely that there would be an improvement.

Answer 1