A survey of a random sample of 300 full-time employees was obtained to assess if there is an association between how they primarily spend their time at work (mostly sitting, split sitting and standing, mostly standing) and their general energy level (low energy, moderate energy, high energy).

	Mostly Sitting	Split Sitting and Standing	Mostly Standing	Total
Low Energy	49	44	10	103
Moderate Energy	42	51	37	130
High Energy	17	26	24	67
Total	108	121	71	300

The data were entered into R and part of the output is provided. Pearson's Chi-squared test data: employees X-squared = 20.573, df = 4, p-value = 0.0003847

If there is NO relationship between primary time spent at work and energy level for the population of all full-time employees, what is the mean of the test statistic?