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.) 500 428 387 386 D 471 503 532 466 321 308 346 471 410 401 383 318 366 329 456 311

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