Construct a graph determining the probability for the following problems. The sample mean and sample standard deviation are present. Construct a 90% confidence interval using the population mean and sample size.
You don't have to use Minitab. You can construct a 90% confidence interval by hand.
Expert provides a brief and clear equational explanation of how to construct a 90% confidence interval, using population mean and sample size. Solution explains this type of problem does not require the use of tabling program Minitab, but can be done by hand. Solution also notes degree of freedom.