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. Factor 1 2 3 4 5 6 7 8 Respondents (%) 68.6 60.2 22.8 20.6 16.6 16.6 14.7 6.9 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. (a) n(A), n(B), n(C) n(A) = n(B) = n(C) = (b) n(A ∩ B) (c) n(Ac ∩ C) (d) n(A ∩ Bc) (e) n(Ac ∩ Cc) (f) n[(A ∪ B) ∩ C]
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. Factor 1 2 3 4 5 6 7 8 Respondents (%) 68.6 60.2 22.8 20.6 16.6 16.6 14.7 6.9 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. (a) n(A), n(B), n(C) n(A) = n(B) = n(C) = (b) n(A ∩ B) (c) n(Ac ∩ C) (d) n(A ∩ Bc) (e) n(Ac ∩ Cc) (f) n[(A ∪ B) ∩ C]
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Question
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.
Factor | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
---|---|---|---|---|---|---|---|---|
Respondents (%) | 68.6 | 60.2 | 22.8 | 20.6 | 16.6 | 16.6 | 14.7 | 6.9 |
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.
(a)
(b)
(c)
(d)
(e)
(f)
n(A), n(B), n(C)
n(A) = | |
n(B) = | |
n(C) = |
(b)
n(A ∩ B)
(c)
n(Ac ∩ C)
(d)
n(A ∩ Bc)
(e)
n(Ac ∩ Cc)
(f)
n[(A ∪ B) ∩ C]
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