A sample of size 225 drawn from a large population has a sample mean of 40 and a sample standard deviation of 12. What is this 95% confidence interval for the population mean? Please provide step by step would really help to understand this problem.
A sample of size 225 drawn from a large population has a sample mean of 40 and a sample standard deviation of 12.
What is this 95% confidence interval for the population mean? Please provide step by step would really help to understand this problem.
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