Question 8 Given the following data on defectives per day Su

Question 8.
Given the following data on defectives per day:

Subgroup     Sample size   number defective
1   1000   23
2   1720   44
3   1600   39
4   980   60
5   1320   33

Calculate the control limits for a p chart using the average sample size.

UCLp =________ LCLp =_________

Question 9.
Does this change the results of #8 above, regarding out of control conditions for subgroups #1 or #4?

Yes _____________ no _____________

Question 10.
Given the following data on defects per day:

Subgroup     Sample size   number defects
1   100   200
2   172   440
3   132   350
4   160   400
5   98   300

Determine the plot points for a standard values U chart for subgroups # 1 and #5.

U(bar) = ________ U(s1) = ________ U(s5) = ________

Question 11.
Are either of the plot points #1 or #5 for problem #10 above out of control?

Yes _____________ no _____________

If so, which? ____________________________________

Question 12.
Calculate the control limits for a U chart using the average sample size for the data in problem #10 above.

UCL = ___________________ LCL = ___________________

Question 13.
Does this change the results of #11. above, regarding out of control conditions for subgroups #1 or #5?

Yes ______________ no ______________