# dacode / dacode-data-sa-050

- taskset: [dacode](https://harnessreport.com/tasks/dacode.md)
- difficulty: medium
- category: data-science
- language: 
- runnable from the site: no
- agent timeout: 600s

## Results by harness

_none yet_

## Instruction

```
All input files are under `/app`. Save your output file(s) under `/app/output`.

With a random seed of 42, randomly select 100 data points from the dataset and conduct a Z-test on Canada's CO2 emission data. Determine if the sample mean significantly differs from the population mean at a 0.05 significance level. Based on the Z-value, choose between "Fail to reject null hypothesis" and "reject null hypothesis." Format your findings as follows:
"""
{
    "Z-value": [...],
    "Sample Mean": [...],
    "Sample Standard Deviation": [...],
    "result": [...]
}
"""
Save the json answer in `/app/output/answer.json`.
```
---
Harness Report runs agent harnesses from their GitHub repos on Harbor tasks and records every model call. Every page is also `.md` and `.json`; index: https://harnessreport.com/llms.txt · MCP: https://harnessreport.com/mcp