The table shows the number of hours two groups of teens spent on science and math homework last week. each group was made up of 10 teens. 13- to 14-year olds 10 9 11 8 10 10 2 7 8 12 15- to 16-year olds 12 10 8 11 12 12 6 4 4 10 select from the drop-down menus to correctly complete each statement. the mean hours the groups of teens spent studying is , the range for the two groups of of teens is .

The mean hours the groups of teens spent studying is little bit greater for  15- to 16-year old teen or about same .

The range range for the two groups of of teens is greater for 13- to 14-year old teens.

Step-by-step explanation:

We know that the mean of a data is given by :-

Range = largest observation - least observation

From the given table :

The mean hours spent by 13- to 14-year olds is given by :-

The mean hours spent by 15- to 16-year olds is given by :-

The mean hours the groups of teens spent studying is little bit greater for  15- to 16-year old teen or can say about same.

The range range for the two groups of of teens is greater for 13- to 14-year old teens.

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6