Let’s say we want my Margin of Error to be 1.00 instead of 1.89 for a 95% confidence

Question: Let’s say we want my Margin of Error to be 1.00 instead of 1.89 for a 95% confidence level for a study then what is the minimum sample size needed?
Please use the Excel worksheet below- enter the confidence level as 0.95, enter the sample deviation that is appropriate, and margin of error=1.00
Use MINIMUM SAMPLE SIZE for the population mean