H0: EDL - ETrad = 0 (proportions are statistically equal)
Confidence interval: 95% (z* = 1,96)
Difference between variances
    Variance (distance learning} = 0,00013
    Variance (traditional learning) = 0,00008
    Sum of variances = 0,00022
    Difference deviation = 0,01466
z = 0,67257
As (-z* < z < z*), we don’t have enough eeidenceto refuse H0

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