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Question

Consider the relative frequency distribution given below:
Class Interval Relative Frequency
20-under 40 0.2
40-under 60 0.3
60-under 80 0.4
80-under 100 0.1

There were 60 numbers in the data set. How many numbers were in the interval 20-under 40?
a) 12
b) 20
c) 40
d) 10
e) 15

Answer

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