Question: If the 95% confidence limits around the mean difference (in a t-test) are 10.5 13.0, we can conclude that, if we repeat the study

If the 95% confidence limits around the mean difference (in a t-test) are 10.5 − 13.0, we can conclude that, if we repeat the study 100 times, then:

(a) Our results will be statistically significant 5 times

(b) Our results will be statistically significant 95 times

(c) 95% of the time the population mean difference will be between 10.5 and 13.00;
5% of the time the population mean difference will be outside this range

(d) 5% of the time the population mean difference will be between 10.5 and 13.00;
95% of the time the population mean difference will be outside this range

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