A) What type of sampling was used to gather the data? B) What is the class width frequency distrubution? C) What are the class boundaries for the class?

salary data is given belove: The Restaurant management council of a certain city wanted to study the salaries of the restaurant workers in the city. They divided the city into four regions (north, south, east, and west) and. selected random sample of restaurants from each region. The Salary $K Frequency 15 - 24.5 25 - 34.5 35 - 44.5 45 -54.5 55 -64.5 a) What type of sampling was used to gather the data? b) What is the class width of the frequency distribution? c) What are the class boundaries for the class 45 - 54.5 ($K) ? 1941 X3 Xz