(Choose 1 answer)
(See picture)
Α. 0.347
Β. 0.576
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.
C. 0.543
D. 1.237
Calculate a 95% upper-confidence bound on the difference in population means (μ₁ - μ2)
Let 20.05 1.65; 20.025 1.96.
FUOn the exam.
