Test Prep Sally plans to buy fabric to make decorative quilt for her bed.
She needs yard of fabric for one section and yard of fabric
for another section.
Each strip below represents 1 yard of fabric. Which strip is
shaded to represent the total amount of fabric Sally needs to
make her quilt?

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