One could reason that high school seniors would have more money issues than high school juniors. Seniors
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Assuming that work hours are normally distributed, do these data suggest that there is a significant difference between the average number of hours that HFL seniors and juniors work per week? Use a = 0.10 .
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Seniors Juniors n 17 n, 20 x 16.4 x 18.405 s, 10.48 -9.69
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