An instructor wants to do a quick research on the distribution of time (in hours) that her students spent on the course webpage. Due to time constraint in this quick research, she only can randomly check the webpage using history of 10 students out of 50 students in the class list. The distribution of time for these 10 students is listed below: Accessed time 10 hours Number of students spent such amount of time 1 student 2 student 8 hours 6 hours 20 hours 11 hours 4 students 1 student 2 students a. Compute the mean of the time distribution in this group of students. b. Compute the variance and standard deviation of time distribution with the given data.
An instructor wants to do a quick research on the distribution of time (in hours) that her students spent on the course webpage. Due to time constraint in this quick research, she only can randomly check the webpage using history of 10 students out of 50 students in the class list. The distribution of time for these 10 students is listed below: Accessed time 10 hours Number of students spent such amount of time 1 student 2 student 8 hours 6 hours 20 hours 11 hours 4 students 1 student 2 students a. Compute the mean of the time distribution in this group of students. b. Compute the variance and standard deviation of time distribution with the given data.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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An instructor wants to do a quick research on the distribution of time (in hours) that her students spent on the
course webpage. Due to time constraint in this quick research, she only can randomly check the webpage
using history of 10 students out of 50 students in the class list. The distribution of time for these 10 students
is listed below:
Accessed time
Number of students spent such amount of time
10 hours
1 student
2 student
8 hours
6 hours
4 students
20 hours
1 student
11 hours
2 students
a. Compute the mean of the time distribution in this group of students.
b. Compute the variance and standard deviation of time distribution with the given data.
Expert Solution
Step 1
Given that
| X | Frequency |
| 10 | 1 |
| 8 | 2 |
| 6 | 4 |
| 20 | 1 |
| 11 | 2 |
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