TABLE 6-3
The number of column inches of classified advertisements appearing on Mondays in a certain daily newspaper is normally distributed with population mean 320 and population standard deviation 20 inches.
-Referring to Table 6-3, a single Monday is chosen at random. State in which of the following ranges the number of column inches of classified advertisement is most likely to be:
A) 300- 320
B) 320- 340
C) 310- 330
D) 330- 350

Question

Quizplus · Accepted Answer

The range 310-330 is centered around the mean (320) and is within one standard deviation (20 inches) from the mean, making it the most likely range for a normally distributed variable.

TABLE 6-3 the Number of Column Inches of Classified Advertisements Appearing on Appearing