The management of a bank must decide whether to install a commercial loan decision-support system (an on-line management information system) to aid its analysts in making commercial loan decisions. Pat experience shows that yı, the additional number (per year) of correct loan decisions – accepting good loan applications and rejecting those that would eventually be defaulted – attributable to the decision-support system, and y2, the lifetime (in years) of the decision-support system, have the joint probability distribution shown in the table : Yı Y2 10 20 30 40 50 60 70 80 90 1 0.001 0.002 0.002 | 0.025 0.040| 0.025 0.005 | 0.005 0 0.075 010 0.070

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Topic Video
Question
100%

How is the answer of 3a - 3f

3. The management of a bank must decide whether to install a commercial loan decision-support system
(an on-line management information system) to aid its analysts in making commercial loan decisions.
Pat experience shows that yı, the additional number (per year) of correct loan decisions – accepting
good loan applications and rejecting those that would eventually be defaulted - attributable to the
decision-support system, and y2, the lifetime (in years) of the decision-support system, have the joint
probability distribution shown in the table :
Yı
Y2
10
20
30
40
50
60
70
80
90
1
0.001
0.002
0.002
0.025
0.040 | 0.025 0.005
0.005
2
0.005
0.005
0.010| 0.075
0.100 | 0.075 0.050
0.030 | 0.030 0.025
3
0.025
0.050 | 0.080 0.050| 0.080
0.040
0.030
4
0.001
0.002 0.005
0.010 0.025 0.010
0.003
0.001
0.001
0.002
0.005 0.005 0.020| 0.030 0.015
find the marginal probability distribution of yı and also y2.
а.
b. Find the probability distribution p¡(yıly2)
Given the decision-support system is in its third year of operation, find the probability that at least
40 additional correct loan decisions will be made
c.
d.
Find the expected lifetime of the decision-support system, i.e., find E(y2)
Are y, and y2 correlated? Are yı and y2 independent?
е.
f.
Each correct loan decision contributes approximately $25,000 to the bank's profit. Compute the
mean and standars deviation of the additional profit attributable to the decision-support system.
Transcribed Image Text:3. The management of a bank must decide whether to install a commercial loan decision-support system (an on-line management information system) to aid its analysts in making commercial loan decisions. Pat experience shows that yı, the additional number (per year) of correct loan decisions – accepting good loan applications and rejecting those that would eventually be defaulted - attributable to the decision-support system, and y2, the lifetime (in years) of the decision-support system, have the joint probability distribution shown in the table : Yı Y2 10 20 30 40 50 60 70 80 90 1 0.001 0.002 0.002 0.025 0.040 | 0.025 0.005 0.005 2 0.005 0.005 0.010| 0.075 0.100 | 0.075 0.050 0.030 | 0.030 0.025 3 0.025 0.050 | 0.080 0.050| 0.080 0.040 0.030 4 0.001 0.002 0.005 0.010 0.025 0.010 0.003 0.001 0.001 0.002 0.005 0.005 0.020| 0.030 0.015 find the marginal probability distribution of yı and also y2. а. b. Find the probability distribution p¡(yıly2) Given the decision-support system is in its third year of operation, find the probability that at least 40 additional correct loan decisions will be made c. d. Find the expected lifetime of the decision-support system, i.e., find E(y2) Are y, and y2 correlated? Are yı and y2 independent? е. f. Each correct loan decision contributes approximately $25,000 to the bank's profit. Compute the mean and standars deviation of the additional profit attributable to the decision-support system.
Expert Solution
steps

Step by step

Solved in 4 steps

Blurred answer
Knowledge Booster
Algebraic Operations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON