What is the z score associated with the test


An analyst has gathered data and counted the number of runs with respect to the median. There were 60 observations and 22 runs.

What is the expected number of above/below the median runs?
What is the standard deviation of above/below the median runs?
What can the analyst conclude given this information?
The expected number of above/below runs would be
What is the z score associated with this test?
Is there any evidence of nonrandom variation? What is the evidence?

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