Question

The students at Littlewood Regional High School cut an average of 3.3 classes per week. A random sample of 117 seniors averages 3.8 cuts per week, with a standard deviation of 0.53. Are seniors significantly different from the student body as a whole?
10
Answer is 10.2 rounded

Formula is Z over X-bar minus Mue (sp?) OVER Sigma divided by square root of N. H-0 = .57 H-1 not equal to .57

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