Compared to using α = .01, choosing α = .001 will make it less likely that a true null hypothesis will be rejected.

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Choosing a smaller significance level (α) makes it less likely to reject a true null hypothesis. This is because with a smaller α, the cutoff for rejecting the null hypothesis becomes more stringent, requiring stronger evidence in favor of the alternative hypothesis before the null can be rejected. Therefore, compared to using α = .01, choosing α = .001 will make it less likely that a true null hypothesis will be rejected.

Compared to Using α =