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lakkis [162]
3 years ago
15

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 .
Mathematics
2 answers:
Ghella [55]3 years ago
7 0

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.

Step-by-step explanation:

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

\text{Mean}=\dfrac{\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}=\dfrac{87}{10}=8.7

\text{Range=12-2=10}

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

\text{Mean}=\dfrac{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.

KonstantinChe [14]3 years ago
5 0
The answer's are:
1. About the same.
2. Greater for the 13 - 14 year old's.


Hope this helps!
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