A certain big box retailer has noted that the time it takes to complete checkout is 1 minute 20% of the time, 2 minutes 40% of the time, 3 minutes 20% of the time, and 4 minutes 20% of the time. Check Out | Probability | Interval of Random Numbers --------------------------------------------------- 1 | 0.2 | [0.0,0.2) 2 | 0.4 | [0.2,0.6) 3 | 0.2 | To be determined 4 | 0.2 | To be determined The table above shows the assignment of random numbers to represent the event of a 1- and 2- minute checkout. What interval of random numbers should be assigned to represent the event of a 3-minute checkout process? [0.6, 0.7) [0.6, 0.8) [0.6, 0.9) [0.6, 1.0)