3.4

11_ The following data represent the monthly,' phone use, in minutes, of a customer enrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. What is the outo point? The cutoff point is 20 I minutes. [Round to the nearest minute.) 44? 382 489 425 523 352 524 312 345 486 443 428 378 543 415 353 548 319 495 400 '3