n : 64 Now the ( 1 - of ) lov22 confidence interval of Be mean age of the back Confidence level is ous then 241 = 1.96 The confidence interval is soto Zoug = 537 8 196 = 53 1 8 1. 96 8 = 53+ 1 96 5 53 - 1 96 53 + 1. 96) = (5 1. 04 , 54. 96 ) The sample of books consisting of he age at back (based on copyright ) dates sample of books from libros by picking,book from each shell and note he age of each of the book . A sample of 64 that I fuck I found out that mean age