The accompanying histogram shows the lengths of ring fingers (in millimeters) for a sample of eighth-graders. Complete parts (a) through (c) below.Click the icon to view the histogram for the lengths of ring fingers.Lengths of Ring Fingersa. Without doing any calculations, approximate the mean finger length for the sample.The mean finger length is approximately 80 mm.(Type a whole number.)b. Approximate the mean by completing the work that is started below.2(60) +7(70) + 8(80) + 4(90) + 4(100)+1(110)+1(120)27x-mm(Round to one decimal place as needed.)o ou8-Frequency2-1110-6080 100 120Ring Fingerlength_mm