F in Exams The Very Best Totally Wrong (8 page)

There are 300 students in the 10th grade.

Mary and Mark want to find out the 10th grade’s favorite color.

Mary asks 30 people.

Mark asks 150 people.

Mark says, “My conclusions are more likely to be reliable than Mary’s.”

Why does Mark think he is right?

A car company is having a sale. A car that was $50,000 before the sale is now 30 percent off. What is the new price?

Name an angle complimentary to BDC

Construct a rectangle with sides Y and ends Z

Expand 2(x + y)

Simplify the following equation.

x is inversely proportional to the square of y.

x=3 and y=4

Express x in terms of y.

What is conditional probability?

What is the splitting formula?

What is a random variable?

What is a discrete random variable?

Give an example with your answer.

You are at a friend’s party. Six cupcakes are distributed among nine plates, and there is no more than one cake per plate. What is the probability of receiving a plate with a cake on it?

What is the symbol for pi?