Members of the robotics club are ordering shirts with the club logo on the front. They can choose from a T-shirt, a sweatshirt, or a collared shirt Each type of shirt comes in either red, blue, green, or purple. What is the probability that a club member will order a sweatshirt that is neither
red nor blue?

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