Please help me with this question.

During one shift, the express lane clerk recorded how many times customers violated the "10 items or less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents "7 or more items," not just 7 items. m A I m m C: N I I Freq we may 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 #itemsoverl Q What is the frequency of times the limit was exceeded by more than 6 items