To assess the probability of getting such weight loss results with a diet that has no effect, you would typically perform a statistical analysis. The analysis would involve comparing the observed weight loss to what might be expected due to chance or random variation.
Key factors for this analysis would include:
1. Sample Size (number of subjects or participants in the study).
2. Standard Deviation (a measure of the spread of the data).
3. Confidence Level (often represented as α, which determines the threshold for statistical significance).
4. Hypothesis Testing (comparing the observed results to what would be expected by chance).
The calculation would typically involve a statistical test, such as a t-test or z-test, depending on the nature of the data and the study design.
Without specific values for these factors and the statistical analysis used, it's not possible to provide a precise percentage chance. If you have access to these details or can provide more information about the study, I can assist you further with the analysis.