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About This Drill
ACT Math — Statistics and Probability — Drill 2 is a Math practice drill covering Statistics and Probability. It contains 5 original questions created by Brian Stewart, a Barron's test prep author with over 20 years of tutoring experience.
This drill covers range and the effect of outliers on measures of center, the fundamental counting principle, compound probability using AND and OR rules, expected value, and counting with permutations and combinations.
Questions in This Drill
- The daily high temperatures (°F) for a week were: 72, 75, 71, 73, 74, 70, 98. Which of the following statements is true?
- A restaurant offers a fixed-price dinner with 4 choices of appetizer, 6 choices of entrée, and 3 choices of dessert. How many different complete dinners are possible?
- A fair coin is flipped and a standard six-sided die is rolled. What is the probability of getting heads on the coin AND rolling a number greater than 4 on the die?
- A carnival game costs $2 to play. A player wins $10 with probability 1/10, wins $3 with probability 1/5, and wins nothing otherwise. What is the expected net gain (or loss) per play?
- A school club has 10 members. The club needs to select a committee of 3 members. How many different committees are possible?