Two Sample ttest

1
Two Sample t-test

• Suppose we have taken independent samples of
  sizes n1 7 and n2 6 from normally distributed
  populations having means m1 and m2 and suppose
  xbar1 240, xbar2 210, s1 5 and s2 6.
  Assume equal variances.
• Use rejection points to test the hypothesis Hom1
  m2 lt 20 vs. Ha m1 m2 gt 20. Take a .01.