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Answer :
To solve this question, we need to determine the ratio of students who use their computers to the total number of students surveyed.
Liliana surveyed 20 students in total.
Next, let's find out how many of these students used their computers. A student used their computer if the number of hours they spend on it each week is greater than 0.
Here are the results of the survey:
8, 15, 0, 11, 12, 13, 16, 13, 0, 4, 17, 14, 30, 13, 5, 12, 1, 13, 12, 21
Count the students who spent more than 0 hours on their computers:
- 8 hours: 1 student
- 15 hours: 1 student
- 11 hours: 1 student
- 12 hours: 3 students
- 13 hours: 4 students
- 16 hours: 1 student
- 4 hours: 1 student
- 17 hours: 1 student
- 14 hours: 1 student
- 30 hours: 1 student
- 5 hours: 1 student
- 1 hour: 1 student
- 21 hours: 1 student
Add these numbers together: 1 + 1 + 1 + 3 + 4 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 18 students
So, 18 students used their computers.
Now, we find the ratio of students who used their computers to the total number of students surveyed. We have:
- 18 students used computers
- 20 students were surveyed in total
The ratio is 18 out of 20, which can be simplified:
[tex]\(\frac{18}{20} = \frac{9}{10}\)[/tex]
Therefore, the ratio of the total number of students who used their computers to the total number of students surveyed is [tex]\(\frac{9}{10}\)[/tex].
Liliana surveyed 20 students in total.
Next, let's find out how many of these students used their computers. A student used their computer if the number of hours they spend on it each week is greater than 0.
Here are the results of the survey:
8, 15, 0, 11, 12, 13, 16, 13, 0, 4, 17, 14, 30, 13, 5, 12, 1, 13, 12, 21
Count the students who spent more than 0 hours on their computers:
- 8 hours: 1 student
- 15 hours: 1 student
- 11 hours: 1 student
- 12 hours: 3 students
- 13 hours: 4 students
- 16 hours: 1 student
- 4 hours: 1 student
- 17 hours: 1 student
- 14 hours: 1 student
- 30 hours: 1 student
- 5 hours: 1 student
- 1 hour: 1 student
- 21 hours: 1 student
Add these numbers together: 1 + 1 + 1 + 3 + 4 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 18 students
So, 18 students used their computers.
Now, we find the ratio of students who used their computers to the total number of students surveyed. We have:
- 18 students used computers
- 20 students were surveyed in total
The ratio is 18 out of 20, which can be simplified:
[tex]\(\frac{18}{20} = \frac{9}{10}\)[/tex]
Therefore, the ratio of the total number of students who used their computers to the total number of students surveyed is [tex]\(\frac{9}{10}\)[/tex].
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