In a study of factors that influence brand switching by a certain demographic, the following factors were identified as being significant as judged by the responses of the 439 participants in the survey. 1: Better price 2: Friend's recommendation 3: Seeing others use it 4: Interesting packaging 5: Buzz-people talking about the brand. 6: An advertisement 7: Press stories 8: Entertainer/sports celebrity endorsement The results of the survey follow. 1 2 3 4 5 6 7 8 Respondents (%) 68.8 -60.4 22.8 20.8 16.8 16.8 14.7 6.7 Let A denote the set of factors that had a response greater than 20%, let B denote the set of factors that had a response between 15% and 25%, and let C denote the set of factors that had a response less than 25%. Find the following. Factor (a) n(A), n(B), n(C) n(A) = n(B) = n(C) = (b) n(An B) (c) n(An C) (d) n(An B) (e) n(An C) (f) n[(AUB) n C]

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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**Title: Understanding Factors Influencing Brand Switching**

**Introduction:**
In a study of factors that influence brand switching by a certain demographic, the following factors were identified as significant based on the responses of the 439 participants in the survey:

1. Better price
2. Friend's recommendation
3. Seeing others use it
4. Interesting packaging
5. Buzz—people talking about the brand
6. An advertisement
7. Press stories
8. Entertainer/sports celebrity endorsement

**Survey Results:**

The results of the survey are shown in the table below:

| Factor |  1   |   2   |   3   |   4   |   5   |   6   |   7   |   8   |
|--------|------|-------|-------|-------|-------|-------|-------|-------|
| Respondents (%) | 68.8 | 60.4  | 22.8  | 20.8  | 16.8  | 14.7  |  6.7  |

**Questions:**

Consider the following definitions:
- Let \( A \) denote the set of factors that had a response greater than 20%.
- Let \( B \) denote the set of factors that had a response between 15% and 25%.
- Let \( C \) denote the set of factors that had a response less than 25%.

Based on these definitions, answer the following questions:

(a) Determine \(n(A)\), \(n(B)\), and \(n(C)\).

\( n(A) = \)
\( n(B) = \)
\( n(C) = \)

(b) Compute \( n(A \cap B) \).

\( n(A \cap B) = \)

(c) Compute \( n(A^c \cap C) \).

\( n(A^c \cap C) = \)

(d) Compute \( n(A \cap B^c) \).

\( n(A \cap B^c) = \)

(e) Compute \( n(A^c \cap C^c) \).

\( n(A^c \cap C^c) = \)

(f) Compute \( n[(A \cup B) \cap C] \).

\( n[(A \cup B) \cap C] = \)

--- 

**Graph/Diagram Explanation:**
The provided table categorizes the
Transcribed Image Text:**Title: Understanding Factors Influencing Brand Switching** **Introduction:** In a study of factors that influence brand switching by a certain demographic, the following factors were identified as significant based on the responses of the 439 participants in the survey: 1. Better price 2. Friend's recommendation 3. Seeing others use it 4. Interesting packaging 5. Buzz—people talking about the brand 6. An advertisement 7. Press stories 8. Entertainer/sports celebrity endorsement **Survey Results:** The results of the survey are shown in the table below: | Factor | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |--------|------|-------|-------|-------|-------|-------|-------|-------| | Respondents (%) | 68.8 | 60.4 | 22.8 | 20.8 | 16.8 | 14.7 | 6.7 | **Questions:** Consider the following definitions: - Let \( A \) denote the set of factors that had a response greater than 20%. - Let \( B \) denote the set of factors that had a response between 15% and 25%. - Let \( C \) denote the set of factors that had a response less than 25%. Based on these definitions, answer the following questions: (a) Determine \(n(A)\), \(n(B)\), and \(n(C)\). \( n(A) = \) \( n(B) = \) \( n(C) = \) (b) Compute \( n(A \cap B) \). \( n(A \cap B) = \) (c) Compute \( n(A^c \cap C) \). \( n(A^c \cap C) = \) (d) Compute \( n(A \cap B^c) \). \( n(A \cap B^c) = \) (e) Compute \( n(A^c \cap C^c) \). \( n(A^c \cap C^c) = \) (f) Compute \( n[(A \cup B) \cap C] \). \( n[(A \cup B) \cap C] = \) --- **Graph/Diagram Explanation:** The provided table categorizes the
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