The following data represent the monthly phone use, in minutes, of a customer enrolled in a fraud 443 465 317 430 D prevention program for the past 20 months. The phone company decides to use the upper fence as 473 461 506 455 the cutoff point for the number of minutes at which the customer should be contacted. What is the 331 478 313 526 cutoff point? 347 310 434 314 367 547 543 412 The cutoff point is |minutes. (Round to the nearest minute.)