Population | Sample size | Sample mean | Sample Standard Deviation |
One | n=20 | x1= 11.07 | s1= 1.74 |
Two | n=20 | x2= 6.36 | s2 = 1.50 |
a) Test at 5% level individually if the mean percentage for each Population is different from 10%.
b) Obtain a 95% confidence interval for the difference of means for the two populations.
c) Test an appropriate pair of hypotheses for the two means at 5% level of significance.
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