Concept explainers
(a)
To find: the number of calls should the stop expect per hour.
(a)
Answer to Problem 15E
2
Explanation of Solution
Given:
Repair calls | 0 | 1 | 2 | 3 |
Probability | 0.1 | 0.3 | 0.4 | 0.2 |
Formula used:
Calculation:
Expected call per hour is given by
The shop could expect about to 2 calls per hour.
(b)
To find: the standard deviation.
(b)
Answer to Problem 15E
0.9
Explanation of Solution
Given:
Repair calls | 0 | 1 | 2 | 3 |
Probability | 0.1 | 0.3 | 0.4 | 0.2 |
Formula used:
Calculation:
Calculating the variance.
Standard deviation is
Therefore, the standard deviation is 0.9.
Chapter 16 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
Additional Math Textbook Solutions
Intro Stats, Books a la Carte Edition (5th Edition)
Introductory Statistics
Statistics: The Art and Science of Learning from Data (4th Edition)
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