Which of the following statements are true about experiments? Check all that apply. Group of answer choices The researcher deliberately imposes some treatment on the subjects in order to observe their responses. A well-designed experiment can provide convincing evidence for a cause-and-effect relationship between two variables. Sometimes the treatment group is compared to a control group where the variable of interest involves a treatment that was self-imposed by the subjects and not administered by the researcher. The goal of a well-designed experiment is to learn about an entire population by asking questions of a group drawn from the population. A well-designed experiment attempts to eliminate the influence of confounding variables on the response variable.

Social mobility: social mobility refers to our chances of moving up or down within the american class structure. what do you think is the most important factor that leads to upward mobility? and why do you feel that way? race or ethnicity gender social class at birth hard work and education

Choose the best example of an indirect confrontation for the following situation: peter, a local school board member hired john whom owns a local print shop to make custom t-shirts for his son's basketball team, the ravens. they are about to play their final game of the year and are having a party to celebrate their semi-finalist rankings. unfortunately, the printer made a mistake and printed on red/blue shirts instead of black/blue which are the team's actual colors. peter explains to john that the team's colors are black/blue instead of red/blue and asks john what he thinks they should do. peter explains to john that the team's colors are black/blue and demands that john re-print the shirts on the correct colors. peter agrees to take the red/blue shirts but then posts a negative yelp review on john's business. peter agrees to take the red/blue shirts but tells everyone he can in the school about the incident and tells them not to buy from john. peter rejects the shirts and files a lawsuit to attempt to recover the down payment he made to john.

Which products do you think required scientific knowledge to develop?