Suppose you took samples repeatedly of 36 self-employed individuals in the US, and calculated the average for each sample. a. When drawing the sampling distrsbonion of the sample average work week hours, the distribution would be centered at (A) 18 and you would count by (8) 6 A b You collect a sample of 36 self-employed intiviua in the Us and get a sample average of 48.2. What is the scor of mis average? Round to two ilerinal places. 21