9$
Sample standard deviation, $s_1 = 8.0$
For High School graduates:
Sample size, $n_2 = 24$
Sample mean, $\bar{x}_2 = 24.8$
Sample standard deviation, $s_2 = 6.1$
Significance level, $\alpha = 0.1$
Hypotheses:
$H_0: \mu_1 \le \mu_2$
$H_a: \mu_1 > \mu_2$
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