Each year, the newspaper America at a Glance writes an article about the performance of students on a particular nationwide math test. Included in the article this year was the following frequency distribution. It summarizes the test scores from a study which looked at 48 students who completed preparation programs for the test. Mathematics test score Frequency 550 to 599 600 to 649 650 to 699 700 to 749 750 to 799 Based on the frequency distribution, using the midpoint of each data class, estimate the mean mathematics test score for the students in the study. For your intermediate computations, use four or more decimal places, and round your answer to one decimal place