Mariska is participating in a research study to determine whether she can detect the difference between two amounts: a circle containing two dots versus a circle with no dots inside. the researcher shows her the empty circle repeatedly until she looks away while it is on the screen. then the researcher shows her the circle with two dots in it, and records how long mariska stares at it. what research method is being used?

Griffin correctly concludes that the coordinate pair for the russian federation is an influential point, because removing the russian federation from the relationship will significantly change the trend of the regression line. is an influential point, because removing the russian federation from the relationship will not significantly affect the estimated coefficient of determination of the regression line. is not an influential point, because the russian federation does not have the highest cvdir of all 1111 nations in the scatterplot. is an influential point, because removing the russian federation from the relationship will not significantly affect the estimated slope of the regression line. is not an influential point, because the russian federation has a positive residual in the least-squares linear regression.