In a survey of 100 people, 60 like coffee and 40 like tea. What is the empirical probability that a randomly selected person likes coffee?
Cannot be determined
1
0.6
0.4
A random variable Y has an expected value of 5 and a variance of 4. What is the expected value of Y - 2?
9
7
3
Which of the following is NOT a valid probability value?
0.75
0
1.25
Which field heavily utilizes probability to analyze and make predictions from data?
Philosophy
Data Science
History
Literature
In a standard deck of 52 cards, you draw one card. What is the probability of drawing a heart or a spade?
1/4
1/52
1/13
1/2
Suppose you are playing a game where you flip a coin until you get heads. What is the probability that it takes exactly 4 flips to get the first heads?
1/16
1/8
What is the value of 5! (5 factorial)?
120
15
20
25
What does the addition rule of probability calculate?
Probability of one event AND another event occurring
Probability of one event OR another event occurring
Probability of an event NOT occurring
Probability of two events occurring given that one has already happened
A random variable X follows a uniform distribution between 0 and 10. What is the probability that X is greater than 7?
0.3
0.1
0.7
0.2
You are playing a game where you roll a die until you get a 6. What is the probability that you will roll the die exactly 4 times before winning?
(1/6)^4
(5/6)^3 * (1/6)
(1/6)^3 * (5/6)
(5/6)^4 * (1/6)