An education researcher randomly selects 38 schools from one school district and interviews all the teachers at each of the 38 schools. Identify the type of sampling used in this example.
A) Simple random sampling B) Systematic random sampling
C) Stratified sampling D) Cluster sampling
Question 2
The peak shopping time at home improvement store is between 8:00am-11:00 am on Saturday mornings. Management at the home improvement store randomly selected 180 customers last Saturday morning and decided to observe their shopping habits.
They recorded the number of items that each of the customers purchased as well as the total time the customers spent in the store. Identify the types of variables recorded by the home improvement store.
A) number of items - continuous; total time - continuous
B) number of items - continuous; total time - discrete
C) number of items - discrete; total time - continuous
D) number of items - discrete; total time - discrete
school of fish
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