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From an ethical standpoint, describe the arguments for and against the use of control groups in, for example, a study that evaluated the effects of giving nursing home patients some additional control over their lives (e.g., giving them a plant to care for).
Confidence Interval
A range of values derived from sample statistics that is likely to contain the true population parameter with a given level of confidence.
Standard Error
A measure of the variability or dispersion of a sample statistic from the population parameter it estimates.
Mean
The average of a set of numerical values, calculated by adding them together and dividing by the number of terms in the set.
Confidence Interval
An interval of values, derived from statistics gathered from a sample, expected to cover the value of a hidden parameter in a population.
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