Ellis ACT Practice

Which of the following is a quadratic function that has a vertex at (2, -7) and opens up?

Which of the following describes experimental probability?

• a. Perform an experiment to determine the probability

• a. Determining the expected probability of an event

• a. Perform a simulation and count the number of possible outcomes

• a. Use trials to count the number of desired outcomes

A spinner has equal sections colored red, blue, and green. A student conducts an experiment where she spins the spinner twice and records the results. The results are shown in the frequency table.

What is the probability of spinning blue twice on the next two spins?

• 1/23

• 5/23

• 15/23

• 20/23

A card is selected from a deck of 52 cards. The probability of its being a red face card is:

• 3/26

• 3/13

• 2/13

• 1/2

Experimental Probability is:

• What Will happen 
• What actually happens
• What should happen
• What I think Happens

What is the decimal form of 35%

• .35

• .035

• 3.5

• 35.0

Which of the following is a prime number?

• 9

• 48

• 73

• 93

The following data gives the information on the observed life times (in hours) of 150 electrical components

What rational number is halfway between 1/6 and 1/2?

• 2/4

• 1/5

• 1/4

• 1/3

• 2x^(3/2)yz^(3/4)
• 2x^(2/3)yz^(4/3)
• 2z/x
• 2x/z