A certain naturopathic remedy being tested may be effective in increasing the life expectancy in people who have a rare disease. A control group consists of 25 subjects who have not taken the remedy and have a mean life expectancy of 72.1 years. A treatment group of the same size that has been given the remedy has a mean life expectancy of 74.9 years. After rerandomizing through simulation, the distribution plot for the differences of means was generated:

whole question here: http://imgur.com/a/YubFc

Question

A certain naturopathic remedy being tested may be effective in increasing the life expectancy in people who have a rare disease. A control group consists of 25 subjects who have not taken the remedy and have a mean life expectancy of 72.1 years. A treatment group of the same size that has been given the remedy has a mean life expectancy of 74.9 years. After rerandomizing through simulation, the distribution plot for the differences of means was generated:

whole question here: http://imgur.com/a/YubFc