3. What is the approximate probability that House4U loans have an average time to approval of 46 days or less? Explain your reasoning using distance from mean.

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Author:Amos Gilat
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Question
1 Approval time
80
46
62
70
27
53
87
33
87
64
74
LE3AFCEN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
75
20
60
42
36
12
29
32
54
55
68
47
68
73
13
89
90
70
21
62
57
63
90
16
21
55
+
41.7193
Approval time
100
90
80
70
60
50
40
30
20
10
0
0
●
●
5
●
●
●
10
F
'Approval time'
●
15
G
●
20
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25
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H
30
●
1
35
40
Transcribed Image Text:1 Approval time 80 46 62 70 27 53 87 33 87 64 74 LE3AFCEN 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 75 20 60 42 36 12 29 32 54 55 68 47 68 73 13 89 90 70 21 62 57 63 90 16 21 55 + 41.7193 Approval time 100 90 80 70 60 50 40 30 20 10 0 0 ● ● 5 ● ● ● 10 F 'Approval time' ● 15 G ● 20 ● 25 ● H 30 ● 1 35 40
Part 1:
A large mortgage company, House4U, has been tasked by the CEO to reduce the amount of time it takes
to approve new applications for mortgage loans. The approval process must go through formal
underwriting, which includes a review of the application and obtaining and reviewing the following:
credit bureau report, pay stubs, copies of tax returns, additional work history information, bank
statements and other asset information, title search, and the property appraisal.
You are hired as a consultant and begin by collecting the data needed to begin your analysis. You select
a random sample of 36 mortgage loans which were approved during the last month. You calculate the
sample mean and standard deviation in Excel (Use the dataset called "Approval_time.xlsx" in Problem
Set #2 Folder).
2
C
IN VIP
SE = 4.005
Calculation:
SE = St. Dev / √n
SE = 23.696/V36
SE =4.005
of edu.
vo
our 1.8 Va
time tine.
Crage me and mouse, i uppies
-gre
-Contrary
557
SE INS
-O
rations Cha
unat in
3. What is the approximate probability that House4U loans have an average time to approval of
46 days or less? Explain your reasoning using distance from mean.
Transcribed Image Text:Part 1: A large mortgage company, House4U, has been tasked by the CEO to reduce the amount of time it takes to approve new applications for mortgage loans. The approval process must go through formal underwriting, which includes a review of the application and obtaining and reviewing the following: credit bureau report, pay stubs, copies of tax returns, additional work history information, bank statements and other asset information, title search, and the property appraisal. You are hired as a consultant and begin by collecting the data needed to begin your analysis. You select a random sample of 36 mortgage loans which were approved during the last month. You calculate the sample mean and standard deviation in Excel (Use the dataset called "Approval_time.xlsx" in Problem Set #2 Folder). 2 C IN VIP SE = 4.005 Calculation: SE = St. Dev / √n SE = 23.696/V36 SE =4.005 of edu. vo our 1.8 Va time tine. Crage me and mouse, i uppies -gre -Contrary 557 SE INS -O rations Cha unat in 3. What is the approximate probability that House4U loans have an average time to approval of 46 days or less? Explain your reasoning using distance from mean.
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