Test scores for 40 job applicants at Briar and Flanagan are reported in the table below.Suppose you intend to show the values in a grouped data relative frequency table, using the intervals 30 to under 40, 40 to under 50, 50 to under 60, and so on.What's the relative frequency value that you should enter in the table for the interval "70 to under 80"? 
Definitions:
Preparation
The action or process of making ready or being made ready for use or consideration.
Follow-Up
The act of maintaining contact with a potential or current customer after an initial meeting, presentation, or sale, to ensure satisfaction and encourage repeat business.
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