Tag: dependent sample t-test

The table below shows the weights of seven randomly selected subjects before and after following a particular diet for two months. The dependent sample are from two normally distributed populations.…

A crossover study was conducted to investigate whether oat bran cereal helps to lower serum cholesterol levels in hypercholesterolemic males. Fourteen such individuals were randomly placed on a diet that…

Suppose that you are interested whether exposure to the organochlorine DDT which has been used extensively as an insecticide for many years, is associated with breast cancer in women. As…