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Exercise 3. Reading Rates: The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute and a standard

Exercise 3. Reading Rates: 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.

(3a) (10pts) What is the reading speed of a sixth-grader whose reading speed is at the 90th percentile?. Draw a picture

(3b) (10pts) A school psychologist wants to determine reading rates for unusual students (both slow and fast). Determine the reading rates of the middle 95% of all sixth-grade students. What are the cutoff points for unusual readers?. Draw a picture

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