Concept explainers
(a)
To construct:A dot plot to display the data.
(a)
Explanation of Solution
Given:
The given data set is:
9,6,8,7,8,8,6,6.5,7,7,9.0,4,3,4,5,6,11,6,3,7,6,10,7,8,4.5,9,7,7.
Graph:
Interpretation: The data seems to be symmetric. All the values are lying between 3 and 11 and the highest frequency is at 7.
(b)
To compute:The proportion of the students in this class got the recommended amount of sleep.
(b)
Answer to Problem 51E
The proportion of the students in this class got the recommended amount of sleep, is 32.14%.
Explanation of Solution
Given: As per the above sub − part a,
Total number of words in a sample = 28
Number of words with length 9 or more = 5
Calculation:
Let p bepercentage of words with letters 9 or more.
Chapter 1 Solutions
PRACTICE OF STATISTICS F/AP EXAM
Additional Math Textbook Solutions
Essentials of Statistics (6th Edition)
Essentials of Statistics, Books a la Carte Edition (5th Edition)
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