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grade 12 · STAT2-002

Use a normal-distribution benchmark

Connect one, two, and three standard deviations with the empirical-rule proportions.

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Show what I knowFresh problem · seed 1631503592

For an approximately normal distribution, what percentage lies within 2 standard deviations of the mean?

Choose an answerabout 68%about 95%about 99.7%exactly 50%

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Math Lab is a working name for Ready Rung's separate math-learning product. Guided success and independent evidence are reported separately.