You are testing 100 circuit boards.  Each passes with 60% probability and the trials are independent.  Let X be the random variable for the number of circuit boards that pass.  What it the variance of X?

Identify the physical change.

An island is 10.5 mi from the coast. How far away is the island in meters?

Identify the chemical change.

Is the following substance an element, a compound, a homogeneous mixture, or a heterogenous mixture? One teaspoon of sugar is dissolved in a cup of hot water until it is evenly distributed.

What is the main reason people are uncomfortable with incest?

What was Armin Meiwes (the guy who consensually ate people) motive behind his sexual interest in eating people?

What is more likely to happen to male victims of sexual assault?

Although extinction is a natural process, current extinctions are of concern to environmentalists because _____

Using the principle of island biogeography to predict the number of species you will find at various prairie preserves, which preserve would you predict to have the greatest species richness?