How do you solve this problem? Explain step by step please?

A random sample of 30 high school students is selected. Each student is asked how much time he or she spent on the Internet during the previous week. The following times (in hours) are obtained: 4 12 9 6 4 6 3 19 7 5 5 4 3 3 5 12 7 4 8 4 6 5 Construct a frequency table with 4 classes. . The class width is This value should be a WHOLE NUMBER. . Don't forget ... round your relative frequency values to 4 DECIMALS . Complete the table below. Number of hours Number of Students Relative Freq 3 hours 6 hours - - 11 hours - 14 hours