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Decision Science
Dec 2025 Examination
Q1. A luxury hotel chain is
designing a customer feedback survey to improve service quality. The marketing
team collaborates with data analysts to prepare questions that can generate
both qualitative and quantitative insights.
The survey includes the following
types of questions:
- “What is your room type?” with
options like Deluxe, Suite, Executive
- “How satisfied are you with the
room service?” rated on a scale from 1 (Very
Dissatisfied) to 5 (Very Satisfied)
- “What is your age?” in exact
years
- “Please rank the following
amenities in order of preference: Wi-Fi, Gym, Spa, Breakfast Buffet”
The team plans to use the results
to segment customers, identify improvement areas, and prioritize services based
on preferences and satisfaction levels.
Identify and explain the types of
scales of measurement used in this survey. Why is it important to understand
these scales before analyzing the data? (10 Marks)
Q2. The following data shows the values of variables X
and Y:
|
X |
Y |
|
18 |
24 |
|
20 |
28 |
|
22 |
30 |
|
25 |
35 |
|
30 |
44 |
Find
the regression equation of Y on X.
(10 Marks)
Q3 (A)
|
Class Interval |
0–10 |
10–20 |
20–30 |
30–40 |
40–50 |
|
Frequency |
4 |
8 |
10 |
x |
8 |
The
mode of the given frequency distribution is 34.5. Find the value of x. (5
Marks)
Q3(B).
A bag contains 6 red balls, 4 green balls, and 5 blue balls. Three balls are
drawn one after another without replacement.
Given
that the first ball drawn is red, what is the probability that the next two
balls are one green and one blue (in any order). (5 Marks)
Dear students, get fully
solved assignments by professionals
Do send your query at :
or call us at :
08263069601
(Plagiarism proofed
assignments available with 100% surety and refund)
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