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 cutoff point? The cutoff point is [: minutes. (Round to the nearest minute.) 445 426 377 407 532 426 331 385 336 483 334 437 516 531 502 498 Q 348 442 367 537