If a statistical test result is not significant at the 0.05 level, then we can conclude: a. It is no

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If a statistical test result is not significant at the 0.05 level, then we can conclude:
a. It is not significant at 0.01 level
b. It is not significant at 0.10 level
c. It must be significant at 0.01 level
d. It must be significant above 0.05 level

b. It is not significant at 0.10 level

As significance level gets lower, the test gets more strict.