Question 7.101

101. Computers per School. The National Center for Educational Statistics (http://nces.ed.gov) reported that the mean number of instructional computers per public school nationwide was 124. Assume that the standard deviation is 50 computers and no information is available about the shape of the distribution. Suppose we take a sample of size 100 public schools. Compute the following probabilities:

7.1.101

(a) 0.0026 (b) 0.4974