(a)
The percentage of the students
Answer to Problem 4.1E
So,
Explanation of Solution
Given:
Table for sunscreen Use:
Grade | Never or rarely | Sometimes | Always or most times | Total |
Total |
Calculation:
In this problem, data shown in given above table is referred, that is describing the usual grades that students get and how often they use screen.
Students who gets
Where,
So,
Thus,
Conclusion:
Therefore,
(b)
The percentage of students who wear sunscreen who gets
Answer to Problem 4.1E
So,
Explanation of Solution
Given:
Table for sunscreen Use:
Grade | Never or rarely | Sometimes | Always or most times | Total |
Total |
Calculation:
In this problem, data shown in given above table is referred, that is describing the usual grades that students get and how often they use screen.
Students making
Where,
So,
Thus,
Conclusion:
Therefore,
(c)
The percentage of overall sample who gets
Answer to Problem 4.1E
No of Students who gets
Explanation of Solution
Given:
Table for sunscreen Use:
Grade | Never or rarely | Sometimes | Always or most times | Total |
Total |
Calculation:
In this problem, data shown in given above table is referred, that is describing the usual grades that students get and how often they use screen.
The number of students who usually get
So, overall sample who gets
The percentage of students making
Where,
So,
Thus, no of Students who gets
Conclusion:
Therefore, no of Students who gets
(d)
The complete table of row percentages.
Answer to Problem 4.1E
The complete table of row percentage is given as below:
Grade | Never or rarely | Sometimes | Always or most times | Total |
Total |
Explanation of Solution
Given:
Table for sunscreen use:
Grade | Never or rarely | Sometimes | Always or most times | Total |
Total |
Calculation:
In this problem, data shown in given above table is referred, that is describing the usual grades that students get and how often they use screen.
And the complete table of row percentage is given as below:
Grade | Never or rarely | Sometimes | Always or most times | Total |
Total |
In each cell, the row percentage was calculated by dividing the cell's value with the total no of students in the same row.
For example, in the cell for sometimes and
Conclusion:
The complete table of row percentage is given as below:
Grade | Never or rarely | Sometimes | Always or most times | Total |
Total |
(e)
Explanation of percentage found in part 'd'.
Answer to Problem 4.1E
The row percentages found in part 'd' indicates that there is some relationship between the usual grades of the students and how often they apply sunscreens.
Explanation of Solution
Given:
Table for sunscreen Use:
Grade | Never or rarely | Sometimes | Always or most times | Total |
| ||||
| ||||
Total |
Calculation:
The row percentages found in part 'iv' indicates that there is some relationship between the usual grades of the students and how often they apply sunscreens.
For example, students who gets
Yet for students who usually get
Conclusion:
The row percentages found in part 'iv' indicates that there is some relationship between the usual grades of the students and how often they apply sunscreens.
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Chapter 4 Solutions
Mind on Statistics - customized for University of Connecticut Statistics 1100
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