(Step-by-Step) Find a 90% confidence interval for the population mean if the sample mean is 1250 with a sample standard deviation of 35 for a sample of 20.
Question: Find a 90% confidence interval for the population mean if the sample mean is 1250 with a sample standard deviation of 35 for a sample of 20. Note sample size is less than 30 and the population standard deviation is unknown. Be sure to use a T-score.
Deliverable: Word Document 
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