
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:**Contingency Tables and Conditional Probability: Homework and Passing a Course**
A teacher categorized students by whether they regularly completed their homework (or not) and whether they passed the course (or not). The data are in the table below.
| | Completed HW | Did not Complete HW | Total |
|-----------------------------------|--------------|----------------------|-------|
| **Passed the Course** | 27 | 8 | 35 |
| **Did not Pass the Course** | 6 | 16 | 22 |
| **Total** | 33 | 24 | 57 |
---
A student from the class is randomly selected. Determine the following probabilities. Enter your results as percents rounded to two decimal places.
**What is the probability a student completed the HW?**
**__________ %**
**What is the probability a student passed the course and did not complete the HW?**
**__________ %**
**What is the probability a student did not pass the course or completed the HW?**
**__________ %**
**What is the probability a student passed the course given that they completed the HW?**
**__________ %**
---
*Explanation of the table:*
1. **Rows**: Indicating whether students passed the course or did not pass the course.
2. **Columns**: Indicating whether students completed their homework or did not complete their homework.
3. **Totals**: The sums of students in each category are provided in the margins of the table.
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