1256p
dav_r_
poj1256p.docxUse excel doc by major to get the reference data to solve the 2 questions
Using the ROI data set:
1. For each of the 2 majors test the hypothesis at the 5% significance level:
. The mean ‘Cost’ for a college is $160,000. Be sure to interpret your results.
· For Business versus Engineering majors conduct a two sample test of the hypothesis at the 10% significance level (assume the variances are not equal):
. The average ’30-Year ROI’ for Business majors is less than for Engineering Majors. Be sure to interpret your results.
