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The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute and a standard deviation of 24 words
The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute and a standard deviation of 24 words per minute. (a) What is the probability that a randomly selected sixth-grade student reads more than 120 words per minute? Round to the nearest 0.001 (b) What is the reading speed at 70th percentile of a sixth grader? Round to nearest 0.1
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