problem 1. The Following Frequency Table shows the drive-through 12 points service times versus the number of customers: Time ( scc )| Frequency 30- 69 a ) Find class width a ) width = 70 - 109 11 110-149 15 b ) Find the upper and 150-189 10 Lower Boundaries b) upper : 190- 229 4 230-269 of 4th class Lower : 6 ( ) compute mean Mean = and standard C ) deviation ST . DV= d) Find class mark of 5 th class do class mark = problem 2 . using the Frequency table in problem 1, construct the Following: 8 points a ) The cumulative Frequency Table class Rel. Freq . by The Relative Frequency Table b Less than | Cumul. Freq a ) (page2 )