Students at a major university in Southern California are complaining of a serious housing crunch. Many of the university's students, they say, have to commute too far to school, and university officials should build more housing near campus. The officials' response is to perform a study. The study, reported in the school newspaper, features the following histogram summarizing the commute distances for a sample of 74 students at the university:

Based on the histogram, estimate the mean commute distance (in miles) for the students in the sample. Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place.