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The scores on one portion of a standardized test are approximately Normally distributed, N(572, 51). a....

The scores on one portion of a standardized test are approximately Normally distributed, N(572, 51).

a. Use the 68-95-99.7 rule to estimate the range of scores that includes the middle 95% of these test scores.

b. Use technology to estimate the range of scores that includes the middle 90% of these test scores.

Math   Statistics-And-Probability   
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