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Suppose you want to test the claim that μ1=μ2. Two samples are random, independent, and come ...

Suppose you want to test the claim that μ1=μ2. Two samples are random, independent, and come from populations that are normally distributed. The sample statistics are given below. Assume that 

σ21 = σ2. At a level of significance of α = 0.05, when should you reject H0?

 n1 = 14                     n2 = 12  

xbar1 = 9              xbar2 = 10  

s1 = 2.5                     s2 = 2.8

A) -1.326 B) -1.821 C) -2.123 D) -1.546  

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