SCENARIO 3: Last year, I conducted a survey study of my customers. Results showed average customer satisfaction was 7.9 out of 10, and the standard deviation of customer satisfaction was 0.87. I am replicating that exact same study again this year. I want a confidence interval of 95%, and a margin of error of 0.10. 1. Sample Size Formula to Use: [ answer here ] 2. Confidence Interval set to [ answer here ] because [explain why it is the right choice for this scenario] . 3. Margin of Error set to [ answer here ]because [explain why it is the right choice for this scenario] . 4. Variance set to [ answer here ] because [explain why it is the right choice for this scenario] . 5. Optimal Sample Size for my study = [insert number here]