Evaluate the Expression $\sum _ { i = 2 } ^ { 5 } ( 4 i - 3 )$

question 63

Multiple Choice

Evaluate the expression.
- $\sum _ { i = 2 } ^ { 5 } ( 4 i - 3 )$

• A) 34
• B) 39
• C) 44
• D) 25

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Definitions:

Control Group

A control group in scientific experiments is the group of subjects that does not receive the treatment or experimental condition and is used as a benchmark to measure the effects of the treatment.

Control Group

In experimental research, a group of subjects that does not receive the experimental treatment and is used as a benchmark to measure how the other tested subjects do.

Placebo

An inert or innocuous substance given to a patient instead of genuine medication, used in studies to evaluate the efficacy of treatments.

Confederate

An individual who is part of an experiment but pretends to be a participant and is aware of the study's aims.