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Abolitionist and missionary groups sent teachers into the Union-occupied South to educate freed slaves during the Civil War.
Significance Level
The threshold below which a p-value is considered statistically significant, typical levels are 0.05, 0.01, etc., indicating the probability of rejecting the null hypothesis when it is true.
Normal Population
A population in which the data follows a normal distribution, characterized by a bell-shaped curve where most observations cluster around the central peak and probabilities for values taper off symmetrically towards the extremes.
Hypotheses
Proposed explanations or predictions that are based on limited evidence as a starting point for further investigation.
Level of Significance
The probability threshold under which a null hypothesis is rejected in hypothesis testing, often denoted by alpha.
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