Question: You randomly select six of the classes. For each class, number the children from 1 to 20. Separately for each list, choose six random numbers

  1. You randomly select six of the classes. For each class, number the children from 1 to 20. Separately for each list, choose six random numbers between 1 and 20, and plan to observe the six children chosen. (Different random numbers are chosen for each class.) On successive days, go to each of the sampled classes and observe each of the sampled children for an hour.

a. What kind of sample is this?

b. To what population can you make generalizations?

c. Are you certain to get students from every grade?

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