Question

1. Classify each sample as Random, Systematic, Stratified, Cluster or other?
   1. All fast food workers at a randomly selected fast food restaurants are selected and asked how many hours per week they work.

2. Every 100^th hamburger manufactured is checked to determine its fat content.

3. Mail carriers of a large city are divided into four groups according to gender (male or female) and according to whether they walk or ride on their routes. Then 10 are selected from each group and interviewed to determine whether they have been bitten by a dog in the last year.

4. People are asked to phone in their response to a survey questions.

Answer 1