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Acetylcholine can increase the strength of contractions and therefore increase ejection fraction.
Population Size
The total number of individuals or units in the group or area being studied.
Sampling Distribution
The likelihood distribution derived from a certain statistic using a random sample.
Standard Error
Standard error measures the dispersion or accuracy of sample statistics compared to the true population parameter, usually in mean calculations.
Random Sample
A subset of individuals chosen from a larger set (population) where each individual has an equal chance of being selected.
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