Explain the significance of each of the following: 
Definitions:
Alternative Hypothesis
In statistical testing, the hypothesis that proposes there is a statistically significant relationship or difference between two variables, as opposed to the null hypothesis.
Standard Deviations
A measure that quantifies the amount of variation or dispersion of a set of data values from the mean.
Standard Error
The standard deviation of the sample mean distribution, often used to estimate the accuracy of the sample mean compared to the population mean.
T-statistic
A type of statistic that is used to determine if there is a significant difference between the means of two groups.
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