ALL ABOUT STATS

1. A consumer group wishes to estimate the average time a person waits in line for the branches of McBee fastfood chain in Makati City. To do this, they would like to observe the waiting time in some of the chain's branches. After some preliminary research, they were able to obtain the following list of McBee branches in Makati: No. Location No. Location 01 Makati Cinema Square 11 Landmark 02 Guadalupe Commercial Center 12 PRC Sta. Ana 03 Glorietta 3 13 Jaka Building 04 Greenbelt 1 14 Power Plant Mall 05 Jupiter Street 15 SM Makati 06 Glorietta 1 16 Valero 07 Ayala Avenue 17 People Support 08 Madrigal Building 18 Kingswood 09 Paseo Center 19 Evangelista 10 SGV Building 20 SM Cyberzone 2 a. Lester puts the numbers 01 to 20 in a bag. Without looking, he draws the numbers 11, 19, and 03. Which branches will be part of his sample? b. If Lester decides to use systematic random sampling to get his sample size of 4, and he draws the number 06 as his first McBee branch, which other branches will be included in his sample