1. You wish to assess whether vitamin C impacts the severity of colds. You assess 3 treatment types. For the first treatment, participants receive high dose vitamin C, in  the second treatment period participants receives low dose vitamin C, and in the  third treatment period, participants receive a placebo. The data is contained in the  SPSS file ‘Colds’. 2. Does breakfast drink differentially affect test performance? A researcher  randomly assigns participants to five different ‘drink groups: Coffee, Tea, Orange  Juice, Apple Juice, or Water. Each participant drinks their designated fluid for breakfast and then engages in a statistics exam