Question

Inter State Moving and Storage Company is setting up a control chart to monitor the proportion...

Inter State Moving and Storage Company is setting up a control chart to monitor the proportion of residential moves that result in written complaints due to late delivery, lost items, or damaged items. A sample of 40 moves is selected for each of the last 12 months. The number of written complaints in each sample is 7, 9, 4, 9, 2, 6, 11, 8, 5, 5, 6, and 15. Click here for the Excel Data File Insert the mean proportion defective, UCL, and LCL. (Round your intermediate calculations and final answers to 2 decimal places.) Does it appear that the number of complaints is out of control for any of the months? Yes No

Homework Answers

Answer #1

From the given data

As per p-chart, One of the sample point at 12th month is above UCL. Therefore, the process is out of control.

Correct answer: YES

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
HCH Manufacturing has decided to use a p-Chart with 2-sigma control limits to monitor the proportion...
HCH Manufacturing has decided to use a p-Chart with 2-sigma control limits to monitor the proportion of defective steel bars produced by their production process. The quality control manager randomly samples 250 steel bars at 12 successively selected time periods and counts the number of defective steel bars in the sample. Sample   Defects 1   7 2   10 3   14 4   8 5   9 6   11 7   9 8   9 9   14 10   11 11   7 12   8 Step 1 of...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of defectives in each are shown in the following table: SAMPLE n NUMBER OF DEFECTIVE ITEMS IN THE SAMPLE 1 15 2 2 15 2 3 15 2 4 15 0 5 15 2 6 15 1 7 15 3 8 15 2 9 15 1 10 15 3 a. Determine the p−p− , Sp, UCL and...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of defectives in each are shown in the following table: SAMPLE n NUMBER OF DEFECTIVE ITEMS IN THE SAMPLE 1 15 0 2 15 0 3 15 0 4 15 2 5 15 0 6 15 3 7 15 1 8 15 0 9 15 3 10 15 1 a. Determine the p−p−, Sp, UCL and LCL...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of defectives in each are shown in the following table: SAMPLE n NUMBER OF DEFECTIVE ITEMS IN THE SAMPLE 1 15 0 2 15 2 3 15 0 4 15 3 5 15 1 6 15 3 7 15 1 8 15 0 9 15 0 10 15 0 a. Determine the p−p−, Sp, UCL and LCL...
A shirt manufacturer buys cloth by the 100 yard roll from a supplier. For setting up...
A shirt manufacturer buys cloth by the 100 yard roll from a supplier. For setting up a control chart to manage the irregularities (e.g., loose threads and tears) the following data was collected from a sample provided by the supplier. SAMPLE 1 2 3 4 5 6 7 8 9 10 IRREGULARITIES 1 4 1 4 3 2 3 5 6 4 a. Determine the c¯c¯ , Sp, UCL and LCL for a c -chart with z= 2. (Leave no...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart...
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of defectives in each are shown in the following table: SAMPLE n NUMBER OF DEFECTIVE ITEMS IN THE SAMPLE 1 15 1 2 15 1 3 15 3 4 15 1 5 15 0 6 15 0 7 15 2 8 15 1 9 15 2 10 15 1 a. Determine the p−p− , Sp, UCL and...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. Sample x R 1 95.72 1.0 2 95.24 0.9 3 95.18 0.7 4 95.42 0.4 5 95.46 0.5 6 95.32 1.1 7 95.40 0.9 8 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12 95.22 0.2 13 95.60 1.3 14 95.22 0.6 15 95.04 0.8 16...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. Sample x R 1 95.72 1.0 2 95.24 0.9 3 95.18 0.7 4 95.44 0.4 5 95.46 0.5 6 95.32 1.1 7 95.40 0.9 8 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12 95.22 0.2 13 95.54 1.3 14 95.22 0.6 15 95.04 0.8 16...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. Sample x R 1 95.72 1.0 2 95.24 0.9 3 95.18 0.7 4 95.42 0.4 5 95.46 0.5 6 95.32 1.1 7 95.40 0.9 8 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12 95.22 0.2 13 95.58 1.3 14 95.22 0.6 15 95.04 0.8 16...
A manufacturing company makes runners for cabinet drawers. To assess the quality of the manufacturing process,...
A manufacturing company makes runners for cabinet drawers. To assess the quality of the manufacturing process, the company collected one sample of 300 consecutively manufactured runners each day for 20 days and counted the number of defective items. The resulting sample data are: Sample:             1      2      3      4      5      6      7      8      9    10 Sample Size:   300 300 300 300 300 300 300 300 300 300 Defectives:        8       6     11    15    12    11     9      6      5      4 The Upper Control Limit, UCL, for a p control chart based on the above data is
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT