80 students entered a dancing competition. The table gives information about the length of time, in minutes, for which each student spent dancing. Time (m)        Frequency 0 < m ≤ 12                 11 12 < m ≤ 24                25 24 < m ≤ 36                23 36 < m ≤ 48                15 48 < m ≤ 60               6 Work out an estimate for the mean length of time the students spent dancing.

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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80 students entered a dancing competition.

The table gives information about the length of time, in minutes, for which each student

spent dancing.

Time (m)        Frequency

0 < m ≤ 12                 11

12 < m ≤ 24                25

24 < m ≤ 36                23

36 < m ≤ 48                15

48 < m ≤ 60               6

Work out an estimate for the mean length of time the students spent dancing.

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