Which of the following is a discrete random variable?
A.
The number of times a student guesses the answers to questions on a certain test
B.
The amount of gasoline purchased by a customer
C.
The amount of mercury found in fish caught in the Gulf of Mexico
D.
The heights of water oak trees
E.
The time elapsed until the first field goal at home football games
Exam No：AP Statistics Problem Set 11 Year：2024 Question No：APStatistics2024AP0440
Answer:
A
Knowledge points:
1.2 The Language of Variation: Variables
4.7 Introduction to Random Variables and Probability Distributions
4.8 Mean and Standard Deviation of Random Variables
Solution:
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