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16 August, 02:26

A random sample of 30 seventh grade students shows that 12 of them own a dog. How many seventh grade students can you predict own a dog if the entire population of seventh graders is 400?

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Answers (2)
  1. 16 August, 02:29
    0
    160

    Step-by-step explanation:

    proportion: 12/30 = 0.4

    0.4 * 400

    160
  2. 16 August, 02:38
    0
    160

    Step-by-step explanation:

    If out of 30 7th graders, 12 own a dog then when you have 400 of them, 160 will have a dog as well.

    The way I did this was by 400/30: which was 13.3 repeating. I then mutliplied this number by 12, to find the final answer of 160.
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