Suppose you needed to test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Sample...

Suppose you needed to test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples.

Sample 1: n1=20, x⎯⎯⎯1=27.1, s1=3.34

Sample 2: n2=3, x⎯⎯⎯2=26.7, s2=9.14
Find:

(a) The estimated degree of freedom is

(b) The test statistic is (use Sample 1 - Sample 2)