Statistics for Business: Decision Making and Analysis, 3rd Edition

Exercises

Mix and Match

Match each definition on the left with a mathematical expression or term on the right.

1. Plot used for visual comparison of results in two (or more) groups	(a) t = − 4.6
2. Difference between the averages in two samples	(b) t = 1.3
3. Difference between the averages in two populations	(c) μ1 − μ2
4. Name given to the variable that specifies the treatments in an experiment	(d) $\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}$
5. Estimate of the standard error of the difference between two sample means	(e) n − 1
6. Avoids confounding in a two-sample comparison	(f) ${\overline{x}}_1-{\overline{x}}_2$
7. Test statistic indicating a statistically significant result if α = 0.05 and H0: μ1 − μ2 ≥ 0	(g) Confounding
8. Test statistic indicating that a mean difference is not ...