Question

HW Score: 78.69%, 12.59 of 16 pts Score: 0 of 1 pt 8 of 16 (15 complete) 3.4.25 Question Help * The following data represent the monthly phone use, n minutes, a customer en ed in a aud prevention pro ram for the past 20 months. The phone c point for the number of minutes at which the customer should be contacted. What is the cutoff point? des touse the upper ence as the cutoff 386 510 449 522 ryde 425 434 382 418 414 336 543 380 338 387 540 319 538 438 384 456 The cutoff point is minutes. (Round to the nearest minute.)

Answer 1

Answer

Using TI84 calculator

press stats, press enter and enter the data in L1

press stats again and go to calc, press enter on 1-var stats

press enter, we get

Q1 = 383

Q3 = 483

IQR or inter-quantile range = Q3-Q1 = 483-383 = 100

Upper fence = Q3 + 1.5*IQR

= 483 + 1.5*100

= 483 + 150

= 633