State which of the types of sampling (random, stratified, systematic, cluster, convenience) 1. Over a period of 2 days, measure the length of time every 5th person
coning into a bank waits for teller service. 2. Take a sample of 5 voting districts from the Cleveland metropolitan region. Select every elementary school from each of

the selected voting districts and determine the number of students enrolled in first grade. 3. A pollster uses a computer to generate 500 random phone numbers and

interviews the voters corresponding to those phone numbers. 4. A market researcher selects 500 drivers at random under 30 years of age and 500 drivers at random over

30 years of age in Arizona.

State which of the types of sampling (random, stratified, systematic, cluster, convenience) 1. Over a period of 2 days, measure the length of time every 5th person
coning into a bank waits for teller service. 2. Take a sample of 5 voting districts from the Cleveland metropolitan region. Select every elementary school from each of

the selected voting districts and determine the number of students enrolled in first grade. 3. A pollster uses a computer to generate 500 random phone numbers and

interviews the voters corresponding to those phone numbers. 4. A market researcher selects 500 drivers at random under 30 years of age and 500 drivers at random over

30 years of age in Arizona.