The following table represents a grouped frequency distribution of the number of hours spent on the computer per week for students. What percentage of students used the computer between 7 and 14.9 hours per week? Round your answer to one decimal place, if necessary.
Hours
Number of Students
3.0-6.9 4
7.0-10.9 17
11.0-14.9 15
15.0-18.9 14
19.0-22.9 6
Well, isn't this a "computational" question. Looks like we're dealing with a frequency distribution of the number of hours students spend on computers. We're interested in finding the percentage of students who fall between 7 and 14.9 hours per week.
So, let's add up the number of students in the 7.0-10.9 hours range (17 students) and the number of students in the 11.0-14.9 hours range (15 students). That gives us a total of 32 students.
Now, we need to calculate the percentage. Since we have a total of 56 students (4 + 17 + 15 + 14 + 6), we divide 32 by 56 and multiply by 100 to get 57.1 percent.
So, the percentage of students who used the computer between 7 and 14.9 hours per week is approximately 57.1 percent.
To find the percentage of students who used the computer between 7 and 14.9 hours per week, we need to calculate the cumulative frequency for the range 7.0-14.9.
First, we find the cumulative frequency by adding up the number of students in each range up to the range 7.0-10.9 and 11.0-14.9.
Cumulative Frequency for 7.0-10.9 = Number of Students in 3.0-6.9 + Number of Students in 7.0-10.9 = 4 + 17 = 21
Cumulative Frequency for 11.0-14.9 = Cumulative Frequency for 7.0-10.9 + Number of Students in 11.0-14.9 = 21 + 15 = 36
Next, we need to find the total number of students, which is the sum of the number of students in each range.
Total Number of Students = Number of Students in 3.0-6.9 + Number of Students in 7.0-10.9 + Number of Students in 11.0-14.9 + Number of Students in 15.0-18.9 + Number of Students in 19.0-22.9
= 4 + 17 + 15 + 14 + 6
= 56
Now, we can calculate the percentage of students who used the computer between 7 and 14.9 hours per week.
Percentage of students = (Cumulative Frequency for 11.0-14.9 - Cumulative Frequency for 7.0-10.9) / Total Number of Students * 100
= (36 - 21) / 56 * 100
= 15 / 56 * 100
= 26.8 (rounded to one decimal place)
Therefore, approximately 26.8% of students used the computer between 7 and 14.9 hours per week.
To determine the percentage of students who used the computer between 7 and 14.9 hours per week, you need to calculate the relative frequency for that range and convert it to a percentage.
First, add up the number of students who fall into the range of 7.0-10.9 hours and 11.0-14.9 hours. In this case, it is 17 + 15 = 32 students.
Next, calculate the total number of students by adding up the number of students in each range: 4 + 17 + 15 + 14 + 6 = 56 students.
Now, divide the number of students in the range 7.0-14.9 hours (32) by the total number of students (56):
32 / 56 = 0.5714
Lastly, convert the decimal to a percentage by multiplying by 100:
0.5714 * 100 = 57.14%
Therefore, approximately 57.14% of students used the computer between 7 and 14.9 hours per week.
(17+15)/total number = ?
Multiply ? by 100.