good evening every body
I have a question about t-statistics in first place I need to use t-statistics to estimate the population mean from a sample set, as you see I have a data set the mean and standard deviation are known for sample but not for the population.
how can I use t-statistics to determine the population mean I have X bar and S and n values for sample n=45
how can I compute the degree of freedom and how can I determine the confidence level? thanks for your time huge regards