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standard error typically 1. As our sample size a) decreases; increases b) decreases; decreases c) increases; increases d) ncr
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Answer #1

1.) As our sample size increases, standard error typically decreases.

This is because, as sample size increase, we gather more information about the question under study and our error in precise estimation reduces.

Ans. d.

2.) An extraneous variable that covariates with the independent variable is confounding variable.

Confounding variable is a special type of extraneous variable that correlates with both independent and dependent variable.

Ans. b.

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