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

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 $+1\mathrm{.}32$

Up$/$Down $+1\mathrm{.}20$

multiple choice $1$

random

non$-$random

b$.$Twenty means were plotted on a control chart. An analyst counted $13$ runs above$/$below the median, and $14$ up$/$down runs. What do the results suggest about the process?

multiple choice $2$

random

non$-$random