3) Joey is testing a medication. It comes in 75 mg pills. He can afford to pay 450 subjects. The medicine is safe up to 280 mg. The population of people with the illness is 20% mild, 30% moderate and 50% severe. He will set up treatment groups using a stratified random sample and block design. a) Describe [using numbers] his b) Indicate the number of treatment groups and stratified random sample. the treatment of those groups. [show work] c) Indicate the mix of people that would be found in each group if all groups had the same makeup. [show work]