Sample 1 12242018192127302621 Sample 2 181516333419182638Sol

Sample 1: 12,24,20,18,19,21,27,30,26,21

Sample 2: 18,15,16,33,34,19,18,26,38

The comparison of two sample means

H0: mu1 = mu2

Ha: mu1 not equals mu2

Two tailed test.

mu1 = 21.8 and mu 2 = 24.11

std dev 1 = 4.895 and std dev 2 = 8.319

M1-M2=21.8-24.11=-2.31

sd=11.304; se=3.1758

95% CI of difference:
-8.5344 <-2.31< 3.9144

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t difference = -0.727

p value = 0.4926

Hence the two are identical and Difference not significant at 5%

mu1-mu2 = -2.31