Simple random samples of high-interest mortgages and low-interest mortgages were obtained. For the 35 high-interest mortgages, the borrowers had a mean FICO score of 701 and a standard deviation of 47. For the 29 low-interest mortgages, he borrowers had a mean FICO credit score of 745 and a standard deviation of 21. Test the claim that the mean FICO score of borrowers with high-interest mortgages is different than the mean FICO score of borrowers with low-interest mortgages at the 0.2 significance level.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Simple random samples of high-interest mortgages and low-interest mortgages were obtained. For the 35 high-interest mortgages, the borrowers had a mean FICO
score of 701 and a standard deviation of 47. For the 29 low-interest mortgages, he borrowers had a mean FICO credit score of 745 and a standard deviation of 21. Test
the claim that the mean FICO score of borrowers with high-interest mortgages is different than the mean FICO score of borrowers with low-interest mortgages at the
0.2 significance level.
Transcribed Image Text:Simple random samples of high-interest mortgages and low-interest mortgages were obtained. For the 35 high-interest mortgages, the borrowers had a mean FICO score of 701 and a standard deviation of 47. For the 29 low-interest mortgages, he borrowers had a mean FICO credit score of 745 and a standard deviation of 21. Test the claim that the mean FICO score of borrowers with high-interest mortgages is different than the mean FICO score of borrowers with low-interest mortgages at the 0.2 significance level.
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