Kizspy | Question: 64
(Choose 1 answer)
(See picture)
A. 0.692
Β. -0.692
C. 0.874
D. -0.874
Checking the lengths (cm) of randomly selected products from two manufacturing plants, we get the following data:
n_{1}=26, n_{2}=23,; \overline{x}_{1}=6.9 \overline{x}_{2}=7.2 s_{1}=1.26, s_{2}=1.76
Use \alpha=0.05 and assume equal variances, what is the test statistic when testing the hypothesis that both groups have the same average lengths?
