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CL fi
21 - 23 5 5 20.5 - 23.5

24 - 26 5 10 23.5 - 26.5

27 - 29 7 17 26.5 - 29.5

30 - 32 8 25 29.5 - 32.5

33 - 35 3 28 32.5 - 35.5

36 - 38 2 30 35.5 - 38.5

______

n =

What is the lower class boundary of the median class ?

a.
20.5


b.
23.5


c.
29.5


d.
26.5