Kizspy | Question: 57
(Choose 1 answer)
(See picture)
A. 0.38
Β. 0.47
C. 0.55
D. 0.28
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:
n_{1}=20 n_{2}=17, \overline{x}_{1}=3.4; \overline{x}_{2}=3.2.
With \alpha=0.05 what is the P-value when testing the hypothesis that both groups have the same weight?
Let P(Z<0.86)=0.805. P(Z<0.88)=0.810, P(Z<0.90)=0.816, P(Z<1)=0.841
