A researcher randomly surveyed two separate age groups to determine the number of hours teens spend on the Internet each week. The results are shown in this table. 13- to 14-year-olds 12 8 7 8 9 6 7 7 9 10 15- to 16-year-olds 15 6 21 12 13 12 8 9 7 10 Based on these results, which conclusions can you draw about these two groups of teens? Select each correct answer. A. On average, 15- to 16-year-olds spend a few hours more on the Internet each week compared to 13- to 14-year-olds. B. On average, 15- to 16-year-olds spend a few hours less on the Internet each week compared to 13- to 14-year-olds. C. On average, the two groups of teens spend about the same amount of time each week on the Internet. D. The amount of time that 15- to 16-year-olds spend on the Internet each week is more variable than the amount time 13- to 14-year-olds spend. E. The amount of time 15- to 16-year-olds spend on the Internet each week is less variable than the amount time 13- to 14-year-olds spend. F. The amount of time that the two groups spend on the Internet each week varies by about the same amount.