Find the zeroes of the functions algebraically. 
Definitions:
Significance Level
The significance level, denoted by alpha, is the threshold chosen by researchers below which a p-value must fall for results to be considered statistically significant.
Null Hypothesis
A statistical hypothesis that asserts there is no effect or no difference, and any observed deviation from this hypothesis is due to random variation.
Type II Error
A statistical error occurring when the null hypothesis is not rejected when it actually is false.
Type II Error
The error that occurs when a statistical test fails to reject a false null hypothesis, mistakenly indicating that a difference or effect does not exist.
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