The bar chart shows the percent of times each color marble was drawn from a bag after 1000 draws with replacement after each draw. if there are 20 marbles in the bag, predict how many are red, how many are blue, and how many are white. explain your reasoning.

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)

What type of symmetry does a rhombus have?

Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect