Question
The following table shows the results of a survey of authors by a fictitious publishing company Established New Authors Authors Total essful Unsuccessful Total 23 53 76 27 69 96 16 20 Consider the following subsets of the set S of all authors represented in the table: C, the set of successful authors; u, the set of upsuccessful authors; N, the set of new authors; and E, the set of estat ISee Example 3.] Describe the set C N' in words The set of authors who are either successful or not new (or boh). O The set of authors who are either successful ar new (or both) The set of authors who are both successful and new O The set of authors who are both unsuccessful and not new O The set of authors who are both successful and not niew Find the number of elements C n N contains. elements Need Help?RedTaituter
Explanation / Answer
N is the set of all new authors and N' is the compliment of N which means set of authors who are not new i. e. The authors who are established :which is set E now to find the number of elements common in C and E that is 23 successful established authors. In words C intersection N' means set of successful and not new authors.