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One group of accounting students used simulation programs, while another group received a tutorial. Scores on...

One group of accounting students used simulation programs, while another group received a tutorial. Scores on an exam were compared. Statistic Simulation Tutorial Mean score x¯1 = 8.9 x¯2 = 10.5 Sample std. dev. s1 = 2.5 s2 = 2.5 Number of students n1 = 25 n2 = 25 a. Construct a 95 percent confidence interval for the true difference in mean scores. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.) The 95% confidence interval is from to . b. Do you think the learning methods have significantly different results? No Yes

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(as)+(as-) 2412 5Q0.08 (6)(0280

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