How often do people upgrade their cell phones? A online poll asked 300 people "how long have you owned your current cell phone". The table below summarize the length of time in months they have owned their current cell phone. Class intervals contain the left endpoint but not the right. (Hint: careful with your widths, they are not all the same. Height = Percent / Width)
Complete the table above and draw a histogram for the data using the density scale in the space below. Remember to label your axes. 1. Approximately what percent have owned their current cell phone less than 18 months? 2. Approximately what percent have owned their current cell phone between 30 and 40 months?