School Improvement in Maryland

Sample Item
Selected Response Item for Grade 7

Standard 5.0 Knowledge of Probability

Topic B. Theoretical Probability

Indicator 1. Determine the probability of an event comprised of no more than 2 independent events

Objective a. Express the probability of an event as a fraction, a decimal, or a percent

Assessment limit: Use a sample space of no more than 35 outcomes and decimals with no more than 2 decimal places

Jose needs to pick a golf ball and golf club. He has 3 white golf balls and 1 yellow golf ball. Jose has 3 black-handled golf clubs and 2 yellow-handled golf clubs. What is the probability that he randomly selects a yellow golf ball and a yellow-handled golf club?

  1. 10%
  2. 25%
  3. 40%
  4. 50%

Correct Answer
A. 10%
Answer Annotation
  1. 10%    (correct answer)
  2. 25%    (only golf ball)
  3. 40%    (only club handle)
  4. 50%    (thinks 50-50)
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