The Digest of Educational Statistics 2004 published by the N

The Digest of Educational Statistics 2004 published by the National Center for Educational Statistics of the U.S. Department of Education predicts that in 2007 there will be a demand for 152,781 new teachers. Out of this total, there will be a need for 86,537 elementary teachers. What is the probability that a new teaching job in 2007 will be for a secondary teacher?

Solution

Since total demand of teachers is 152,781 and number of elementary teachers is 86,537, So number of secondary teachers are 152781-86537=66244

Hence the probability = 66244/152781=0.43