Concept explainers
To find: The standard deviation of total weight of the boxes.
Answer to Problem 19PT2
The standard deviation of the provided boxes is 3.02.
Explanation of Solution
Given:
Standard deviation of three boxes are 0.3, 0.1 and 3 pounds respectively.
Calculation:
The variance of three boxes could be calculated as:
Now, the standard deviation could be calculated as follows:
Thus, the standard deviation of three boxes is 3.02.
Hence, the correct option is (c).
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
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