# Question

Refer to the information given in Exercise 10.17. Test at a 5% significance level if the two population means are different.

n1 = 21 1 = 13.97 s1 = 3.78

n2 = 20 2 = 15.55 s1 = 3.26

n1 = 21 1 = 13.97 s1 = 3.78

n2 = 20 2 = 15.55 s1 = 3.26

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