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?


$1.99
Sales1
Views164
Comments0
  • CreatedApril 27, 2015
  • Files Included
Post your question
5000