Marketing Campaign Effectiveness Analyzer

Evaluate the effectiveness of our last two marketing campaigns using the data below. Compare their performance across key metrics and recommend which approach we should continue or modify.

Campaign A: [paste metrics — spend, impressions, clicks, conversions, revenue, time period]
Campaign B: [paste metrics — spend, impressions, clicks, conversions, revenue, time period]

Provide:
1. **Side-by-Side Comparison Table**: CTR, CPC, CPA, ROAS, conversion rate for each campaign
2. **Winner Analysis**: Which campaign won on each metric, and which wins overall when weighted by business impact
3. **Statistical Confidence**: Are the differences statistically significant, or could they be noise? (Suggest minimum sample sizes needed)
4. **Segment Hypothesis**: What audience segments or channels likely drove the difference?
5. **Optimization Recommendations**: 3 specific changes to test in the next campaign cycle
6. **Budget Reallocation**: If the total budget stays the same, how should it be redistributed?