How much more do public colleges and universities charge out-of-state students for tuition per year? A random
Question:
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a) Create a 90% confidence interval for the mean difference in cost. Be sure to justify your procedure.
b) Interpret your interval in context.
c) A national magazine claims that public institutions charge state residents an average of $7000 less than out-of-stators for tuition each year. What does your confidence interval indicate about this assertion?
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a Paired data assumption The data are paired by college Randomization condition The colleges were se...View the full answer
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Related Book For 
Stats Data And Models
ISBN: 662
4th Edition
Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock
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