1. Bankrate.com reports mortgage loan interest rates for 30-year and 15-year fixed- rate mortgage loans for 9 randomly selected lending institutions. Assuming normality, a financial analyst would like to determine whether there is a difference between mean 30-year rates and mean 15-year rates. Alpha = 0.05 Ho: Ha: 30 year 15 year Decision: 1 6.72 6.60 2 6.75 6.37 3 6.74 6.55 Lending Institutions 4 6.60 6.36 n= 5 6.43 6.16 6 6.88 6.58 df = mean of differences = 7 6.90 6.80 8 6.68 6.39 alpha = 5% standard deviation of differences = 0.089 9 6.80 6.54

1. Bankrate.com reports mortgage loan interest rates for 30-year and 15-year fixed- rate mortgage loans for 9 randomly selected lending institutions. Assuming normality, a financial analyst would like to determine whether there is a difference between mean 30-year rates and mean 15-year rates. Alpha = 0.05 Ho: Ha: 30 year 15 year Decision: 1 6.72 6.60 2 6.75 6.37 3 6.74 6.55 Lending Institutions 4 6.60 6.36 n= 5 6.43 6.16 6 6.88 6.58 df = mean of differences = 7 6.90 6.80 8 6.68 6.39 alpha = 5% standard deviation of differences = 0.089 9 6.80 6.54

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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