The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each ca ot lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim he polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth Click the icon to view the table. Determine the null and alternative hypotheses. OA. Ho: Whether a subject lies is not independent of the polygraph test indication.

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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A. Determine test statistic 

B. Determine X^2 test statistic with using the frequencies.

C. Reject or Fail to reject h0

The image presents a scenario involving polygraph (lie detector) experiments that were conducted by researchers. The table provided shows data on whether the polygraph test correctly identified if a subject lied or did not lie. 

### Objective:
To test the claim using a 0.05 significance level to determine if there is an independence between whether a subject lies and the polygraph test indication.

### Hypotheses:
- **Null Hypothesis (H₀)**: Whether a subject lies is independent of the polygraph test indication.
- **Alternative Hypothesis (H₁)**: Whether a subject lies is not independent of the polygraph test indication.

### Selected Answer for Hypotheses:
- **Option B:**
  - H₀: Whether a subject lies is independent of the polygraph test indication.
  - H₁: Whether a subject lies is not independent of the polygraph test indication.

### Data Table:
The table shows the relation between the polygraph test indication and the actual status of whether the subject lied:

|                               | No (Did Not Lie) | Yes (Lied) |
|-------------------------------|------------------|------------|
| **Polygraph test indicated that the subject lied.**     | 12               | 20         |
| **Polygraph test indicated that the subject did not lie.** | 24               | 7          |

### Task:
Determine the test statistic (χ²).

- **χ²**: (To be calculated and rounded to three decimal places)

This experiment aims to assess the accuracy of polygraph testing in distinguishing between truth and deception based on statistical analysis.
Transcribed Image Text:The image presents a scenario involving polygraph (lie detector) experiments that were conducted by researchers. The table provided shows data on whether the polygraph test correctly identified if a subject lied or did not lie. ### Objective: To test the claim using a 0.05 significance level to determine if there is an independence between whether a subject lies and the polygraph test indication. ### Hypotheses: - **Null Hypothesis (H₀)**: Whether a subject lies is independent of the polygraph test indication. - **Alternative Hypothesis (H₁)**: Whether a subject lies is not independent of the polygraph test indication. ### Selected Answer for Hypotheses: - **Option B:** - H₀: Whether a subject lies is independent of the polygraph test indication. - H₁: Whether a subject lies is not independent of the polygraph test indication. ### Data Table: The table shows the relation between the polygraph test indication and the actual status of whether the subject lied: | | No (Did Not Lie) | Yes (Lied) | |-------------------------------|------------------|------------| | **Polygraph test indicated that the subject lied.** | 12 | 20 | | **Polygraph test indicated that the subject did not lie.** | 24 | 7 | ### Task: Determine the test statistic (χ²). - **χ²**: (To be calculated and rounded to three decimal places) This experiment aims to assess the accuracy of polygraph testing in distinguishing between truth and deception based on statistical analysis.
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