Question

In: Math

The percentage of income spent on housing (including mortgage/rent, taxes, utilities) is an important factor loan...

The percentage of income spent on housing (including mortgage/rent, taxes, utilities) is an important factor loan agents use in approving customers for mortgages. A researched selected a sample of 20 homeowners in Florida and calculated their total housing costs are a percent of their monthly income. The researcher collected this information from the same 20 homeowners 5 years ago and again in 2019. The information collected is in the attached Excel data file. Is it reasonable to conclude the percent is less now than five years ago? Use a two-sample test of hypothesis to determine your answer. Explain and show your work, including the 6 steps for hypothesis testing.

Homeowner Five Years Ago Now
Holt 17 10
Pierse 20 39
Merenick 29 37
Lanoue 43 27
Fagan 36 12
Bobko 43 41
Kippert 45 24
San Roman 19 26
Kurimsky 49 28
Davison 49 26
Lozier 35 32
Cieslinski 16 32
Rowatti 23 21
Koppel 33 12
Rumsey 44 40
McGinnis 44 42
Pierce 28 22
Roll 29 19
Lang 39 35
Miller 22 12

Solutions

Expert Solution

Let be the mean housing cost before five years ago and let be the housing cost now.

The hypotheses will be

Used R. On RH.S. is output and on L.H.S. is code.

As p-value >  0.05. So, we will not reject the null hypothesis at 0.05 significance level and conclude that the housing cost is same as five years ago.


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