It was reported that the median interest rate on 30-year fixed mortgages in a certain large city

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It was reported that the median interest rate on 30-year fixed mortgages in a certain large city is 7.75% on a particular day, with zero points. A random sample of nine lenders produced the following data of interest rates in percentage.
It was reported that the median interest rate on 30-year

Test the hypothesis that the median interest rate in this city is different from 7.75%, using (a) the sign test, and (b) the Wilcoxon signed rank test. Use α = 0.01. Compare the two results.

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Mathematical Statistics With Applications In R

ISBN: 9780124171138

2nd Edition

Authors: Chris P. Tsokos, K.M. Ramachandran

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