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? (type a whole number.) time (sec) frequency 60 - 119 8 120 - 179 23 180 - 239 12 240 - 299 3 300 - 359 4 a. no. the frequency distribution tells nothing about the data values that fall below the lowest class limit or above the highest class limit. b. yes. the data values in each class are spread evenly across the full length of the class. c. yes. the data values in each class are equal to the corresponding class midpoint. d. no. the data values in each class could take on any value between the class limits, inclusive.

Explanation:

Step1: Understand frequency - distribution concept

A frequency - distribution groups data into classes. It only gives the number of data points that fall within each class interval. It does not provide information about the exact individual data values. For example, if a class is 60 - 119 with a frequency of 8, we know there are 8 data values in that range, but we don't know what those 8 values are exactly.

Step2: Analyze the options

Option A is correct because the frequency - distribution only tells us the number of data points in each class, not the exact original data values. Option B is incorrect as data values in a class are not necessarily spread evenly across the class length. Option C is incorrect as data values in a class are not equal to the class mid - point. Option D is incorrect as data values can take on any value within the class limits, not just any value between the class limits inclusive.

Answer:

A. No. The frequency distribution tells nothing about the data values that fall below the lowest class limit or above the highest class limit.