# dacode / dacode-data-sa-052 - 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`. Perform a t-test to compare the average medical expenses between smokers and non-smokers to determine if smoking status has a significant impact on medical expenses. Use a significance level of 0.05. Based on the p-value, select either "Fail to reject null hypothesis" or "reject null hypothesis" as the result. Provide your results in the following format: """ { "T-Statistic": [...], "P-Value": [...], "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