Two types of dermabrasion treatment were subjected to customer's evaluation. Based on their experience, they are to give satisfaction rating on the dermabrasion treatment according to the effectiveness in treating acne. The tables below show the frequency distribution of scores varying from a low of 1 (very dissatisfied), 2 (dissatisfied), 3 (fairly dissatisfied), 4 (satisfied), to 5 (very satisfied). Dermabrasion Treatment Satisfaction score (X) Treatment A Freq. (f) Dermabrasion Treatment Satisfaction score (X) Treatment B ... Freq. (f) 5 6 1 10 17 15 3. 30 4 30 4 38 41 2.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question

7

What is the probability that the customers are very
dissatisfied with treatment A?
What is the probability that the customers are very
dissatisfied with treatment B?
What is the probability that the customers are at least
satisfied with treatment A?
What is the probability that the customers are at least
satisfied with treatment B?
Which is the better treatment in terms of consistency?
Transcribed Image Text:What is the probability that the customers are very dissatisfied with treatment A? What is the probability that the customers are very dissatisfied with treatment B? What is the probability that the customers are at least satisfied with treatment A? What is the probability that the customers are at least satisfied with treatment B? Which is the better treatment in terms of consistency?
Two types of dermabrasion treatment were subjected to customer's evaluation. Based on their experience, they are to give
satisfaction rating on the dermabrasion treatment according to the effectiveness in treating acne. The tables below show the
frequency distribution of scores varying from a low of 1 (very dissatisfied), 2 (dissatisfied), 3 (fairly dissatisfied), 4 (satisfied), to 5
(very satisfied).
Dermabrasion Treatment
Satisfaction score (X)
Treatment A
Freq. (f)
Dermabrasion Treatment
Satisfaction score (X)
Treatment B
...
Freq. (f)
5
6
1
10
17
15
3.
30
4
30
4
38
41
2.
Transcribed Image Text:Two types of dermabrasion treatment were subjected to customer's evaluation. Based on their experience, they are to give satisfaction rating on the dermabrasion treatment according to the effectiveness in treating acne. The tables below show the frequency distribution of scores varying from a low of 1 (very dissatisfied), 2 (dissatisfied), 3 (fairly dissatisfied), 4 (satisfied), to 5 (very satisfied). Dermabrasion Treatment Satisfaction score (X) Treatment A Freq. (f) Dermabrasion Treatment Satisfaction score (X) Treatment B ... Freq. (f) 5 6 1 10 17 15 3. 30 4 30 4 38 41 2.
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