A sample of 20 participants took part in a hearing experiment. Among other things, the absolute hearing threshold (in decibels) was measured for each participant. The 20 measurements were as follows: 25, 22, 18, 35, 37, 34, 31, 27, 24, 21, 18, 39, 23, 23, 23, 20, 20, 17, 17, 32
Draw the histogram for these data using an initial class boundary of 16.5 and a class width of 5. Note that you can add or remove classes from the figure. Label each class with its endpoints.