Kizspy | Question: 44
(Choose 1 answer)
(See picture)
A. 0.347
B. 0.543
C. 0.576
D. 1.237
Assuming that the weights (kg) of two groups of children with
non-smoking and smoking mothers both follow normal
distributions with standard deviations of 0.576 and 0.776,
respectively. Data for two random samples from these two
groups are as follows:
n₁ = 20,x₁ = 3.4;
n₂ = 17,x2 = 3.2.
Calculate a 95% upper- confidence bound on the difference in
population means (u₁ - μ₂)
Let Zo.05 = 1.65; Zo.ozs = 1.96.
