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.) C 481 462 533 415 441 462 501 345 470 412 400 353 507 430 354 346 309 419 540 545

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