a. Imagine we are measuring the difference in blood sugar levels (mmol/L) in 25 sets of siblings, one of whom conducts regular physical exercise and the other who doesn't. We hypothesise that the energetic sibling will have lower blood sugar levels than the non-energetic sibling. What statistical test would be most appropriate for these data?   Question 9 options:   Independent samples t-test   Paired t-test   Single-sample t-test   Mann-Whitney-Wilcoxon test

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