Homework Answers
Answer: The process is not in statistical control.
Explanation:
If no points lie beyond the control limits, no trends above, or below the centerline, and there are no patterns, then the process is in statistical control. In this case there two points beyond UCL and 3 points below LCL. Hence the process is not in statistical control.
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True or false. the process data is in statistical
control?
40 35 8. A process control...
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 0.9 4 95.48 0.4 5 95.46 0.5 6 95.32 1.1 7 95.40 1.0 8 95.44 0.3 9 95.08 0.2 9 10 10 95.50 0.6 11 95.80 0.6 12 95.22 0.2 13 95.60 1.3 14 95.22 0.5 15 95.04...
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 0 3 15 3 4 15 3 5 15 3 6 15 1 7 15 3 8 15 2 9 15 0 10 15 3 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 3 2 15 2 3 15 2 4 15 2 5 15 0 6 15 2 7 15 1 8 15 3 9 15 2 10 15 1 a. Determine the p−p−, Sp, UCL and LCL...
1st*variability is: in control/out of control 2nd*no samples fall/one/two/more 3rd* in control/out of control The following...
1st*variability is: in
control/out of control
2nd*no samples fall/one/two/more
3rd* in control/out of control
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. X Sample R 1 95.72 1.0 95.24 2 0.9 0.9 95.18 95.42 0.4 4 5 95.46 0.5 95.32 1.1 6 7 95.40 0.9 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12...
A manufacturer of dustless chalk instituted a quality control program to monitor chalk density. The sample standard dev...
A manufacturer of dustless chalk instituted a quality control program to monitor chalk density. The sample standard deviations of densities for 24 different subgroups, each consisting of n 8 chalk specimens, were as follows: This data has been coded so that you may copy and paste it into R with the name k.sdevs. k.sdevs c(0.202, 0.315, 0.097, 0.182, 0.229, 0.215, 0.320, 0.288, 0.146, 0.208, 0.050, 0.145, 0.269, 0.350, 0.158. 0.215, 0.386, 0.187, 0.151, 0.231, 0.275, 0.117, 0.091, 0.059) mean(k.sdevs) #Construct...
f dustless chalk Instituted a quality control program A manufacturer o monitor chalk density. The sample standard devia...
f dustless chalk Instituted a quality control program A manufacturer o monitor chalk density. The sample standard deviations of densities for 24 different subgroups, each consisting of n 8 chalk specimens, were as follows: This data has been coded so that you may copy and paste it into R with the name k.sdevs. k.sdevs c(0.207, 0.313, 0.097, 0.186, 0.233, 0.209, 0.319, 0.290, 0.143 0.212, 0.054, 0.146, 0.274, 0.348, 0.161, 0.216, 0.090, 0.056) 0.152, 0.231, 0.274, 0.121, 0.385, 0.188. mean(k.sdevs) #...
A) Resistors for electronic circuits are being manufactured on a high-speed automated machine. Th...
a) Resistors for electronic circuits are being manufactured on a
high-speed automated machine. The machine is set up to produce a
large run of resistors of 1,000 ohms each. To create a control
chart to be used throughout the run, 20 samples were taken with
four resistors in each sample. The data is shown below and is also
available in the attached Excel file. Use MS Excel or Minitab to
develop X-bar and R charts, then determine if the process...
D Question 8 0.85 pts C&A wants to see if the accuracy of the prices that...
D Question 8 0.85 pts C&A wants to see if the accuracy of the prices that were entered into its database used for its cash registers is in control. C&A collects 5 weeks of data as shown below. Incorrect Price Entries The 3-sigma upper and lower control chart limits for this process would be OUCL-1.33: LCL 0.35 OUCL 10.35; LCL-0 UCL-4.2; LCL- UCL-133: LCL Next Previous 30 8 8 5
Examine the Statistical Process Control outputs below. If the sample size is 3, What are the...
Examine the Statistical Process Control outputs below. If the sample size is 3, What are the UCL and LCL, respectively, for this X-bar chart? Hour X-BAR R 1 3 2 2 5 1 3 4 4 4 2 1 Select one: O a. 4.654 and 2.346 O b. 4.958 and 2.042 O c. 7.26 and -0.26 O d. 5.546 and 1.454 e. Right answer is not listed
Please solve and explain steps thanks A sample of 200 ROM computer chips was selected on each of 30 consecutive d...
Please solve and
explain steps thanks
A sample of 200 ROM computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: The data has been given so that it can be copied into R as a vecto. #### non.conforming = c(11, 21, 27, 16, 35, 17, 4, 22, 9, 22, 30, 18, 15, 21, 20, 19, 12, 23, 11, 22, 15, 16, 12, 26, 28, 14, 11, 17,...
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 0.9 4 95.48 0.4 5 95.46 0.5 6 95.32 1.1 7 95.40 1.0 8 95.44 0.3 9 95.08 0.2 9 10 10 95.50 0.6 11 95.80 0.6 12 95.22 0.2 13 95.60 1.3 14 95.22 0.5 15 95.04...
1st*variability is: in
control/out of control
2nd*no samples fall/one/two/more
3rd* in control/out of control
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. X Sample R 1 95.72 1.0 95.24 2 0.9 0.9 95.18 95.42 0.4 4 5 95.46 0.5 95.32 1.1 6 7 95.40 0.9 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12...
A manufacturer of dustless chalk instituted a quality control program to monitor chalk density. The sample standard deviations of densities for 24 different subgroups, each consisting of n 8 chalk specimens, were as follows: This data has been coded so that you may copy and paste it into R with the name k.sdevs. k.sdevs c(0.202, 0.315, 0.097, 0.182, 0.229, 0.215, 0.320, 0.288, 0.146, 0.208, 0.050, 0.145, 0.269, 0.350, 0.158. 0.215, 0.386, 0.187, 0.151, 0.231, 0.275, 0.117, 0.091, 0.059) mean(k.sdevs) #Construct...
f dustless chalk Instituted a quality control program A manufacturer o monitor chalk density. The sample standard deviations of densities for 24 different subgroups, each consisting of n 8 chalk specimens, were as follows: This data has been coded so that you may copy and paste it into R with the name k.sdevs. k.sdevs c(0.207, 0.313, 0.097, 0.186, 0.233, 0.209, 0.319, 0.290, 0.143 0.212, 0.054, 0.146, 0.274, 0.348, 0.161, 0.216, 0.090, 0.056) 0.152, 0.231, 0.274, 0.121, 0.385, 0.188. mean(k.sdevs) #...
a) Resistors for electronic circuits are being manufactured on a
high-speed automated machine. The machine is set up to produce a
large run of resistors of 1,000 ohms each. To create a control
chart to be used throughout the run, 20 samples were taken with
four resistors in each sample. The data is shown below and is also
available in the attached Excel file. Use MS Excel or Minitab to
develop X-bar and R charts, then determine if the process...
D Question 8 0.85 pts C&A wants to see if the accuracy of the prices that were entered into its database used for its cash registers is in control. C&A collects 5 weeks of data as shown below. Incorrect Price Entries The 3-sigma upper and lower control chart limits for this process would be OUCL-1.33: LCL 0.35 OUCL 10.35; LCL-0 UCL-4.2; LCL- UCL-133: LCL Next Previous 30 8 8 5
Examine the Statistical Process Control outputs below. If the sample size is 3, What are the UCL and LCL, respectively, for this X-bar chart? Hour X-BAR R 1 3 2 2 5 1 3 4 4 4 2 1 Select one: O a. 4.654 and 2.346 O b. 4.958 and 2.042 O c. 7.26 and -0.26 O d. 5.546 and 1.454 e. Right answer is not listed
Please solve and
explain steps thanks
A sample of 200 ROM computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: The data has been given so that it can be copied into R as a vecto. #### non.conforming = c(11, 21, 27, 16, 35, 17, 4, 22, 9, 22, 30, 18, 15, 21, 20, 19, 12, 23, 11, 22, 15, 16, 12, 26, 28, 14, 11, 17,...
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