Nationally, 38% of fourth graders cannot read an age-appropriate book. The following data show the number of children, by age, identified as learning disabled under special education. Most of these children have reading problems that should be identified and corrected before third grade. Current federal law prohibits most children from receiving extra help from special education programs until they fall behind by approximately two years worth of learning, and that typically means third grade or later (USA Today, September 6, 2001).

Age	Number of Children
6	37,369
7	87,436
8	160,840
9	239,719
10	286,719
11	306,533
12	310,787
13	302,604
14	289,168

Question: Show that the probability distribution satisfies equations Equation 5.1 which is f(x) 0 and Equation 5.2 which is f(x) = 1.