Question

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 .

Answer 1

The answer's are:
1. About the same.
2. Greater for the 13 - 14 year old's.


Hope this helps!

Answer 2

Answer: 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.

Explanation:

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

`\text{Mean}=\frac{\text{Sum of all observations}}{\text{Number of observations}}`

Range = largest observation - least observation

From the given table :

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

`\text{Mean}=(87)/(10)=8.7`

`\text{Range=12-2=10}`

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

`\text{Mean}=(89)/(10)=8.9`

`\text{Range=12-4=8}`

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.