Blake is selected for a study on music preference and happiness. he thinks the experimenter's hypothesis is that people who listen to classical music are happier. as a result, blake reports listening to classical music more often than he realy does, as well as inflated scores on self-reported happiness. this is an example of: experimenter expectations o placebo effect o random assignment o participant demand question 2 among the examples below, the strongest correlation coefficient is: o +0.30 o +0.05 o +2.52 o -0.90 question 3 a true experience has which of the following two characteristics? o random assignment and a manipulated dependent variable. o random selection and a manipulated dependent variable. o random selection and a manipulated independent variable. o random assignment and a manipulated independent variable question 4 1 points s students who study for 7 hours over the course of a week will perform better than students who cram for 7 hours the night before the exam. the independent variable in this hypothesis is: o students o exam performance o number of hours studied o method of studying (spaced or cramming)