Question: 45
(Choose 1 answer)
(See picture)
A. 2.294
B. 1.515
C. 1.896
D. 3.456
Checking the lengths (cm) of randomly selected products from
two manufacturing plants, we get the following data:
n₁ = 26,₁ = 6.9, s₁ = 1.26,
n₂ = 23,x2 = 7.2, S₂ = 1.76.
Use α = 0.05 and assume equal variances, what is the pooled
standard deviation?
