statistics-session 1.pptx normal distribution-session 2.pptx t distribution-session 3.pptx confidence interval for mean sigma known-session 4.pptx confidence interval for mean sigma Unknown-session 5.pptx confidence interval for two means-session 6.pptx confidence interval for a population proportion-session 7.pptx confidence interval for the difference between two proportions-session 8.pptx sample size determination for mean and proportion-session 9.pptx introduction hypothesis test-session 10.pptx types of errors- session 11.pptx p value-session 12.pptx hypothesis testing a single population mean-session 13-part 1.pptx hypothesis testing a single population mean-session 13-part 2.pptx