Kizspy | Question: 63
(Choose 1 answer)
(See picture)
A. 0.787
Β. 0.877
C. 0.677
D. 0.978
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. Testing on the corresponding samples gives us the following results:
n1 20,X₁ = 3.4;n2 = 17,x2 = 3.2.
With a = 0.05, what is the test statistical value of testing the hypothesis that both groups have the same average weight?
