Answer :

The class boundaries midpoint and width are 128 and 16

Finding the class boundaries midpoint and width

from the question, we have the following parameters that can be used in our computation:

120 - 136

The class boundaries midpont is calculated as

Midpoint = (120 - 0.5 + 136 + 0.5)/2

Evaluate

Midpoint = 128

For the width, we have

Width = 136 - 120

Width = 16

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