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A manufacturer of cat food is planning to survey households in the United States to determine purchasing habits of cat owners

Statistics Jan 02, 2021

A manufacturer of cat food is planning to survey households in the United States to determine purchasing habits of cat owners. Four different random samples of 15 households are selected from each of the following four annual income groups: Less than $15,000; $15,000 to less than $40,000; $40,000 to less than $75,000; More than $75,000. The total of 60 households make up a (choose two):

1. population

2. stratified sample

3. sample with random assignment

4. sample

5. simple random sample.

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