Each year, the mean score in mathematics on a particular nationwide test is about 500. The daily newspaper America at a Glance has just released the results of a study of 48 students who completed preparation programs for this test. The following histogram, which summarizes the mathematics test score information for the 48 students, was colorfully displayed on the front page of America at a Glance: Frequency 15- 14 10 10- 5- 550 600 650 700 750 BOO Mathematics test score From the histogram, estimate the mean mathematics test score for the students in the study. Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place. X 5