2,000 repeat (loyal) buyersA accuracy for accuracy O A. Take the highest number

Question

2,000 repeat (loyal) buyersA accuracy for accuracy O A. Take the highest number of samples from the stratum that seems the most representa ative, and take the lowest number of samples from the stratum that is most sikely to produce outlers O c. select a simple random sample tom each of the three types of customers and combine the results O D. 2 of k custormers, where krounding to the nearest integer. Next, choose the first customer to be -rounding Partition the N customers in the hame into n groups , where customers in the frame. Then, select the remaining n-1 customers by taking every kth customer thereafter from the entire frame

Explanation / Answer

(a) Option B: Stratified sample for efficiency. (since the population has already been divided into 3 stratums)

(b) Option C is correct. This is the process of stratified sampling method.

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