Concept explainers
a.
To find: The percentile at which the student watched TV for 7 hours last week.
a.
Answer to Problem R2.2RE
The percentile is 57.
Explanation of Solution
Given:
The plot is:
It has been provided that the amount spent by the student is 7 hours per week. To find the percentile, construct a vertical line that cuts the x -axis at 19.50. Now, construct a horizontal line for the intersection of the vertical line.
It could be seen that both the line intersecting at 57th percentile.
Thus, the required percentile is 57.
b.
To find: The IQR of the figure.
b.
Explanation of Solution
From the provided plot, the third
Thus, the
Thus, the required value is 9.00.
Chapter 2 Solutions
EBK PRACTICE OF STAT.F/AP EXAM,UPDATED
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