Mean 1: 39.7
Mean 2: 36.37
N1: 150
N2: 207
Std Dev.1: 3.65
Std Dev.2: 3.16
结果:
z for 95% CI= 1.96
declare p larger than alpha=0.05 not significant.
mean1 eq: 39.7 (variance= 13.323) (se= 0.298)
mean2 eq: 36.37 (variance= 9.986) (se= 0.2196)
Probability that var1
Difference between means:
M1-M2=39.7-36.37=3.33
sd=6.3307; se=0.3702
95% CI of difference:
2.6044 <3.33< 4.0556 (Wald)
t-difference: 8.995
df-t: 291.9; p= 1
(left p: 0; two sided: 0)