Question

refer to the table summarizing service times (seconds) of dinners at a fast - food restaurant. how many individuals are included in the summary? is it possible to identify the exact values of all of the original service times? time (sec) frequency 60 - 119 9 120 - 179 23 180 - 239 15 240 - 299 1 300 - 359 5 individuals are included in the summary. (type a whole number.)

Explanation:

Step1: Recall frequency - sum concept

The total number of individuals is the sum of all frequencies.

Step2: Calculate sum of frequencies

$9 + 23+15 + 1+5$
$=32+15 + 1+5$
$=47+1+5$
$=48 + 5$
$=53$

Answer:

53