Data was collected for 40 randomly selected trees growing in the median strip of a busy freeway. The height of each tree (in inches) was recorded. Data was recorded to the nearest whole inch. The data is summarized in the histogram below. 2
4
6
8
10
12
height (in)
25
30
35
40
45
50
55
60
65
Frequency
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What is the minimum possible tree height for the data recorded for this histogram? Note: Each bin contains its lower class boundary, but not its upper bin boundary.