Exam Scores at Private and Public Schools A researcher claims that students in a private school have exam scores that are at most 8 points higher than those of students in public schools. Random samples of 60 students from each type of school are selected and given an exam. The results are shown. At α = 0.05, test the claim.
Private school | Public school |
σ1 = 15 n1 = 60 |
σ2 = 15 n2 = 60 |
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Elementary Statistics: A Step By Step Approach
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