At royston's favorite clothing store, the cost of a pair of jeans is $4 more than twice the cost of a shirt. the cost of a pair of dress pants is $2 less than 2.5 times the cost of a shirt. if the cost of a shirt is s dollars and royston purchased 1 pair of jeans and 1 pair of dress pants, which expression represents the total amount he spent in terms of s?

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Find the quotient with the restriction.

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