1. Find the names of all reviewers who have provided ratings for movies, listed without any duplicates.

9. What are three advantages of using views?

Suppose D is a  4×6 matrix and S is a pxq matrix. Suppose we want to compute the product DS. Which is true?

What is the largest possible rank of a 7×3 matrix?

We know matrix multiplication does not commute in general. However, there are statements we can make in specific situations related to commutativity.    Determine whether each statement is true or false. 

A group of students is working on a puzzle. Each student has two pieces necessary to complete it. All the students need to complete the puzzle. This situation is an example of a(n) ________________. [BLANK-1]

Tereza believes that all Asians are good in math. This belief is an example of a(n)________________. [BLANK-1]

Explain what is meant by the contact hypothesis.

Most social psychologists define aggression as ____.

_____ are social standards that prescribe what people ought to do. [BLANK-1]