Librarians categorize the library books into loanable and non-loanable books. The non-loanable books are the reference books. However, the loanable books are the non-reference books. After cataloguing the books, the books are available for loan. Students who borrow the library books should return them back before the due date. Books that are 12 months over the due date would be considered as a lost state. However, if those books are found in the future, they must be returned back to the library. When the books are found not required in the library or have been damaged, the book would be disposed. Create an State machine diagram.

A medical Centre can have many doctors. A doctor can be scheduled for many appointments but may not have any scheduled appointment at all. A patient can schedule request for one or more appointments. However, every appointment is about only one patient. As a result of every appointment, there must be a bill. One payment is applied to exactly 1 bill, and 1 bill can be paid off over time by several payments. A bill can be outstanding, having nothing yet paid on it at all. One patient can make many payments, but a single payment is made by only 1 patient. Some patients are insured by an insurance company. If they are insured, they can only carry insurance with one company. An insurance company can have many patients carry their policies. For patients that carry insurance, the insurance company will make payments, each single payment is made by exactly 1 insurance company. (Hint: final ERD must include 7 tables.) a) Identify the entities with attributes and keys (primary and foreign keys).…

A number of parents have volunteered their children to participate in a developmental study administered by a local child psychologist. The following chart summarizes the results of the psychologist's assessments. Developmental Test Scores 40- 35 30 25 20 15 10 1 2 4 5 6 7 8 9 10 Age (years) Which of the following statistical techniques can the psychologist use to determine the developmental score of a typical 4-year- old child despite the fact that no 4-year- old children participated in the study? O Regression O Clustering Classification O Outlier/anomaly detection Score on Developmental Test