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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:
☐ A
A. (0.247.0.947)
☐ C
B. (-0.547.0.977)
C. (-0.247.0.647)
D. (1.247.1.987)
n₂ =
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n₁ = 20,x₁ = 3.4;
17,x2= = 3.2.
Calculate a 95% confidence interval on the difference in
population means (u₁- μ₂).
Let Zo.05
=
1.65; Zo.ozs = 1.96.
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