What is a “tentative” standard?

Question 5 Your friend offers to place a bet with you. You will roll a pair of four-sided dice, with sides numbered from 1 – 4.  If the sum of the two dice is less than or equal to 5, he will pay you $5.00. But you will pay him $6 if the sum of the two dice is greater than 5.  Compute your expected winnings for a single bet. 

Question 9 The weight of frogs in grams in a marsh population are normally distributed with mean (μ) equal to 23 grams and standard deviation (σ) equal to 1.4 grams.  How much would a frog need to weigh (in grams) to be in the 80th percentile for weight?   

What is a Servlet primarily used for?

A university stores information about buildings and the rooms inside each building. A room is identified only by: room_number (e.g., 101, 205) floor However, these attributes alone are not guaranteed to be unique across the entire campus because multiple buildings can have Room 101.  Thus, a relationship located_in(room, building) is used to supply the building’s identifying information. What type of entity is room?

The closure of a set of FDs is:

Which of the following best describes the goal of normalization?

Which type of dependency is this? Given  Relation R(A, B, C)Candidate Key = A, B FD given: AB → C

What is the domain of an attribute?

A hospital records which patient is assigned to which room, and each room holds at most one patient.Relationship set: assigned(patient, room, date_assigned) What should be used as the primary key of the relationship set?