# Question

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 less than 100 words per minute?

(b) What is the probability that a randomly selected sixth-grade student reads more than 140 words per minute

(c) What is the probability that a randomly selected sixth-grade student reads between 110 and 130 words per minute?

(d) Would it be unusual for a sixth-grader to read more than 200 words per minute? Why?

(a) What is the probability that a randomly selected sixth-grade student reads less than 100 words per minute?

(b) What is the probability that a randomly selected sixth-grade student reads more than 140 words per minute

(c) What is the probability that a randomly selected sixth-grade student reads between 110 and 130 words per minute?

(d) Would it be unusual for a sixth-grader to read more than 200 words per minute? Why?

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