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Define the following (a) Experimental unit (b) Treatment (c) Response variable (d) Factor (e) Placebo (f) Confounding

Define simple random sampling.

What is an observational study? What is a designed experiment? Which allows the researcher to claim causation between an explanatory variable and a response variable?

Explain the difference between a single-blind and a double- blind experiment.

Distinguish between nonsampling error and sampling error.

What is random sampling? Why is it used and how does it compare with convenience sampling?

What is a cross-sectional study? What is a case-control study? Which is the superior observational study? Why?

The survey has bias. (a) Determine the type of bias. (b) Suggest a remedy. The village of Oak Lawn wishes to conduct a study regarding the income level of households within the village. The village manager selects 10 homes in the southwest corner of the village and sends an interviewer to the homes to determine household income.

True or False: Generally, the goal of an experiment is to determine the effect that treatments will have on the response variable.

A coach must select two players to serve as captains. He wants to randomly select two players to be the captains. Obtain a simple random sample of size 2 from the following list: Mady, Breanne, Evin, Tori, Emily, Clair, Caty, Jory, Payton, Jordyn. Write a short description of the process you used to generate your sample.