Concept explainers
a.
To find: The mean and standard deviation.
a.
Answer to Problem 7CRE
The mean and standard deviation are 0.5 and 0.0990 respectively.
Explanation of Solution
Given:
Calculation:
The mean and standard deviation can be calculated as:
The required mean and standard deviation are 0.5 and 0.0990 respectively
b.
To find: The
b.
Answer to Problem 7CRE
The probability is 0.1562.
Explanation of Solution
The probability that average number of months is greater than 0.6 can be calculated as:
Thus, the probability is 0.1562.
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Basic Business Statistics, Student Value Edition
Elementary Statistics
Fundamentals of Statistics (5th Edition)
Elementary Statistics Using Excel (6th Edition)
Essentials of Statistics, Books a la Carte Edition (5th Edition)
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