In preparation for a study of the effectiveness of an antischizophrenia drug, an experimenter puts the experimental drug and the placebo into capsules of the same color and codes them. Neither the subjects nor the experimenter will know who gets the experimental drug or the placebo. This is an example of a:

Me! will give brainliest to whoever answers correctly! arrange the events in peruvian history in chronological order using the numbers 1-6. a. simón bolívar and antonio jóse de sucre’s defeat of spanish forces ensures peru’s independence. b. alejandro toledo is the first indigenous peruvian elected president. c. spanish conquistador francisco pizarro arrives in peru and enslaves peru's indigenous people. d. túpac amaru ii is executed, and his sacrifice inspires peruvians to seek independence and equal rights for indigenous people. e. the chaví­n culture establishes settlements high in the andes. f. attacks by rebel groups threaten democratic rule. (for example, find out the dates of the events (years) and and list them below) you for your time!