Aresearcher 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.