=+48. An information retrieval system has ten storage locations. Information has been stored with the exUnless otherwise noted, all content on this page is © Cengage Learning.

pectation that the long-run proportion of requests for location i is given by i 5 (5.5 2 i 2 5.5 )y30. A sample of 200 retrieval requests gave the following frequencies for locations 1–10, respectively: 4, 15, 23, 25, 38, 31, 32, 14, 10, and 8. Use a chi-squared test at significance level .10 to decide whether the data is consistent with the a priori proportions.