Question

refer to the table summarizing service times (seconds) of dinners at a fast - food restaurant. time (sec) frequency 60 - 119 8 120 - 179 23 180 - 239 12 240 - 299 3 300 - 359 4 individuals are included in the summary. (type a whole number.)

Explanation:

Step1: Sum up the frequencies

To find the total number of individuals included in the summary, we add up all the frequencies in the frequency - column.
$8 + 23+12 + 3+4$

Step2: Calculate the sum

$8+23 = 31$, $31+12=43$, $43 + 3=46$, $46+4 = 50$

Answer:

50