Topics Covered
• Difference in population proportions (p₁ − p₂)
• Difference in sample proportions (p̂₁ − p̂₂)
• Sampling distribution of p̂₁ − p̂₂
• Normality conditions for two samples
• Mean and standard deviation formulas
• Effect of sample size on variability
• Z-score calculations for differences
• Probability calculations using normal approximation
• Common misconceptions and pitfalls
• Step-by-step problem-solving framework
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