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Identify the consequence (i.e. increase, decrease, or none) that the following procedures are likely to to...

Identify the consequence (i.e. increase, decrease, or none) that the following procedures are likely to to have on both bias and sampling error in an experimental study.

1) Increasing sample size?

Bias:

Sampling error:

2) Assigning treatment to subjects alphabetically, not randomly?

Bias:

Sampling error:

3) Applying every treatment to every experimental unit in random order?

Bias:

Sampling error:

4) Testing only one treatment group, without a control group?

Bias:

Sampling error:

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