Analyze the data in the following problems using median and up/down run tests with z = 2.

a. Given the following run test results of process output, what do the results of the run tests suggest about the process?

Test	z-score
Median	+2.32
Up/Down	+2.03

multiple choice 1

non-random

random

b.Twenty means were plotted on a control chart. An analyst counted 13 runs above/below the median, and 6 up/down runs. What do the results suggest about the process?

multiple choice 2

non-random

random

c. The following data are the number of defects per spool of cable.

	OBSERVATION
	1	2	3	4	5	6	7	8	9	10	11	12	13	14
Number of defects	3	3	1	0	1	3	2	0	2	1	3	1	2	0

d. The postmaster of a small western town receives a certain number of complaints each day about mail delivery.

	DAY
	1	2	3	4	5	6	7	8	9	10	11	12	13	14
Number of complaints	4	15	14	8	9	6	5	12	13	7	6	4	2	10