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bachelor in business administration
Polytechnic State University Sanluis
Jan-2006 - Nov-2010
CPA
Polytechnic State University
Jan-2012 - Nov-2016
Professor
Harvard Square Academy (HS2)
Mar-2012 - Present
Tuition 2006. How much more do public colleges and universities charge out-of-state students for tuition per semester? A random sample of 19 public colleges and universities listed at www.collegeboard.com yielded the following data. Tuition figures per semester are rounded to the nearest hundred dollars.
a) Create a 90% confidence interval for the mean difference in cost. Be sure to justify the procedure you use.
b) Interpret your interval in context.
c) A national magazine claims that public institutions charge state residents an average of $3500 less for tuition each semester. What does your confidence interval indicate about the validity of this assertion?
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