In 2009, the average household income for micro-enterprise operators in Vermont was $36,752. Officials at the Vermont Foundation for Social Enterprise believe that household incomes among micro-entrepreneurs have gone up over time, but they do not have the time to contact all of the individuals in their micro-enterprise database to get an updated estimate. Accordingly, officials contact a randomly selected sample of 125 micro-entrepreneurs from their listings. Based on the data collected, can officials confidently conclude that the household incomes of the state’s micro-entrepreneurs have gone up?