According to a recent survey, the salaries of assistant professors have a mean of $40,756 and a standard deviation of $7500. Assuming that the salaries of assistant professors follow a normal...

Extracted text: According to a recent survey, the salaries of assistant professors have a mean of $40,756 and a standard deviation of $7500. Assuming that the salaries of assistant professors follow a normal distribution, find the proportion of assistant professors who earn at most $48,000. Round your answer to at least four decimal places. Aa