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3 years ago

12

If used compensation to find product of 37x4 first she found 40x4=160 then adjusted that product by adding 3 groups of 4 to get

her final answer 172. What did she do incorrectly?

1 answer:

aleksandrvk [35]3 years ago

4 0

She added to the answer of 40x4, when she added to 37. She should have subtracted.

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3 years ago

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Here we can see that the sample size is inversely proportion withe square of margin of error.

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3 years ago

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