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Galina-37 [17]
3 years ago
15

A null hypothesis can only be rejected at the 5% significance level if and only if:

Mathematics
1 answer:
uranmaximum [27]3 years ago
4 0
<span>The probability of the outcome's occurrence by "chance" is 5% or less. "Chance" results are those that are within normal variation, which is defined as 2 standard deviations from the mean. Results that are less than 2 standard deviations from the mean are considered not statistically significant, meaning that the null hypothesis should not be rejected. There are some differences the point at which the 5% case occurs, depending on whether the null hypothesis is directed or not.</span>
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