Homework Answers
Here, correct Answer is Yes,
as using Z = +- 2 in the control chart, considering that UCL and LCL value is shown in the control chart, again, as all the data points are in between UCL and LCL, and no others special causes are observed , again we may find that for some Data points, shifting from Median Value but still fall in between UCL and LCL, thus, Process appears to be performing appropriately,
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Consider the following control chart 123 4S67910 11 12 131 Sample- ing2 in the up down run test,w...
a) Develop a preliminary control chart and plot the sample values on your chart. Explain what...
a) Develop a preliminary control chart and plot the sample
values on your chart. Explain what you found.
b) After a thorough search for the records, it was found that
the data recorded on Days 13 and 18 are not reliable. These two
data are then eliminated. Redevelop p-chart from the new data set
and plot the sample values on your chart again.
c) Estimate the probability that the value of a sample is
zero.
d) A more functional control...
28. Consider the following table: Part Test 1 Test 2 Test 3 X-bar 1 383.75 373.75 446.25 401.25 7...
Need help doing 28.3 and
28.4!
28. Consider the following table: Part Test 1 Test 2 Test 3 X-bar 1 383.75 373.75 446.25 401.25 72.5 125 2 406.25 531.25 3 368.75 5 457.5 270 398.75 345.8333 128.75 401.5278 108.75 Averages 28.1 Set up the control limits for an X-bar and R Chart for the table above. 28.2 If the specifications are set at 435 t 45, and the process output is normally distributed, estimate the fraction nonconforming. 28.3 If the...
Question pertains to the x-chart part Sample Mean Range 16 8 12 13 6 6 4...
Question pertains to the
x-chart part
Sample Mean Range 16 8 12 13 6 6 4 15 10 10 11 10 16 13 14 0 14 17 11 12 IU 12 12 11 13 14 12 7 8 13 9 11 14 7 13 15 10 15 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results oblained: Sample Mean Range 16 9 17 12...
1 pts D Question 11 You want to determine the control lines for a p-chart for...
1 pts D Question 11 You want to determine the control lines for a p-chart for quality control purposes. If the total number of defects from all samples is 250, the number of samples is 100, and the sample size is 50, which of the following would be the standard deviation used in developing the control lines? O 0.1556 0.2499 0 0.0707 O 0.0308 O 0.02499
Apply the t −test to the following sample and test the hypotheses. 11 12 13 10...
Apply the t −test to the following sample and test the hypotheses. 11 12 13 10 15 H 0 : μ = 10 H a : μ > 10.
If I run an ANOVA on a two-sample data set, and get F(1, 12) = 4.56,...
If I run an ANOVA on a two-sample data set, and get F(1, 12) = 4.56, what would be the corresponding t-value if I would have just used a t-test? How do you know? What is the corresponding p -value? Would you consider this result statistically significant?
Create a Control Limit chart for the following: You are a manager at RadioTag Inc., a...
Create a Control Limit chart for the following: You are a manager at RadioTag Inc., a maker of RFID tags for US military and private use (e.g., Wal Mart). Your process assembles radio id tags to certain specifications – 95.5 confidence intervals, however as they come off the assembly line a test is run on each tag to determine whether the frequency works or does not (hint the data are dichotomous distributed binary). Below are the data you collected over...
Consider the following hypothesis test: Ho: mu<=12 H1: mu>12 A sample of 20 provided a sample...
Consider the following hypothesis test: Ho: mu<=12 H1: mu>12 A sample of 20 provided a sample mean of 14 and a sample standard deviation s = 4.52 . Use a = 0.05 . Step 1: Calculate the test statistic for this problem . Round your answer to four decimal places. Step 2: What is the p-value for your test? Step 3: State the conclusion to this problem.
2. The postmaster of a small western city receives a certain number of complaints each day about mail delivery. Construct a control chart with three sigma limits using the following data. Is the process in control? SAMPLE 1 2 3 4 5 6 7 8 9 10 11 12 13
1. The postmaster of a small western city receives a certain number of complaints each dayabout mail delivery. Construct a control chart with three sigma limits using the following data. Is the process in control? SAMPLE1234567891011121314Number of complaints4101489651213764210
Consider the following hypothesis test: Ho: µS 12 Ha: µ > 12 A sample of 25...
Consider the following hypothesis test: Ho: µS 12 Ha: µ > 12 A sample of 25 provided a sample mean 14 and a sample standard deviation s= = 4.32. a. Compute the value of the test statistic (to 2 decimals). 2.31 b. Use the t distribution table (Table 2 in Appendix B) to compute a range for the p-value. The p-value is less than .005 Answer the next three questions using the critical value approach. C. Using a = 0.05,...
a) Develop a preliminary control chart and plot the sample
values on your chart. Explain what you found.
b) After a thorough search for the records, it was found that
the data recorded on Days 13 and 18 are not reliable. These two
data are then eliminated. Redevelop p-chart from the new data set
and plot the sample values on your chart again.
c) Estimate the probability that the value of a sample is
zero.
d) A more functional control...
Need help doing 28.3 and
28.4!
28. Consider the following table: Part Test 1 Test 2 Test 3 X-bar 1 383.75 373.75 446.25 401.25 72.5 125 2 406.25 531.25 3 368.75 5 457.5 270 398.75 345.8333 128.75 401.5278 108.75 Averages 28.1 Set up the control limits for an X-bar and R Chart for the table above. 28.2 If the specifications are set at 435 t 45, and the process output is normally distributed, estimate the fraction nonconforming. 28.3 If the...
Question pertains to the
x-chart part
Sample Mean Range 16 8 12 13 6 6 4 15 10 10 11 10 16 13 14 0 14 17 11 12 IU 12 12 11 13 14 12 7 8 13 9 11 14 7 13 15 10 15 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results oblained: Sample Mean Range 16 9 17 12...
1 pts D Question 11 You want to determine the control lines for a p-chart for quality control purposes. If the total number of defects from all samples is 250, the number of samples is 100, and the sample size is 50, which of the following would be the standard deviation used in developing the control lines? O 0.1556 0.2499 0 0.0707 O 0.0308 O 0.02499
Consider the following hypothesis test: Ho: µS 12 Ha: µ > 12 A sample of 25 provided a sample mean 14 and a sample standard deviation s= = 4.32. a. Compute the value of the test statistic (to 2 decimals). 2.31 b. Use the t distribution table (Table 2 in Appendix B) to compute a range for the p-value. The p-value is less than .005 Answer the next three questions using the critical value approach. C. Using a = 0.05,...
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