Question

Time (sec) Frequency

Answer 1

Answer :

1. The total number of individuals are included in the​ summary = 55
2. No, it is impossible to identify the exact values of all of the original service​ times.

Explanation:  

In a frequency table , Class frequency refers to the number of observations in each class .

Further explanation :

We are given table summarizing service times​ (seconds) of dinners at a fast food restaurant.

Time (sec)              Frequency

60 - 119                         8

120 - 179                     25

180 - 239                     14

240 - 299                     2

300 - 359                     6

Total                            55

Here frequency is telling the number of individuals have a particular time period (class) of serving.  

Thus , the total number of individuals are included in the​ summary = Total frequency  

Since Total frequency = 8+25+14+2+6

                                     = 55

Thus , the total number of individuals are included in the​ summary = 55

Since each frequency number is representing number of services done in particulate time interval.

Therefore it is impossible to identify the exact values of all of the original service​ times.

 

Learn more:  

• Frequency Table: brainly.com/question/11367327 , Answered by Frika

• Class frequency: brainly.com/question/12719662 , Answered by Absor201

Keywords:

Frequency table , Class frequency

Answer 2

Answer:

We are given the below frequency table:

Time (sec)    Frequency

60 to 119                    8

120 to 179            25

180 to 239            14

240 to 299             2

300 to 359             6

Total                           55

Therefore, there are 55 individuals included in the summary.

Is it possible to identify the exact values of all of the original service​ times?

No, it is possible to identify the exact values of all of the original service times because the data values in each class could take on any value between the class​ limits,