Given information:
[tex]\begin{gathered} H_0\colon\mu_1=\mu_2 \\ H_a\colon\mu_1<\mu_2 \end{gathered}[/tex]
n1=12
Mean x1=75.4
SD1=9.7
n2=19
Mean x2=83.3
SD2=17.8
significance level alfa=0.02
To find the test statistic let's use the formula:
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