In a standard deck of 52 cards, you draw one card. What is the probability of drawing a heart or a spade?
1/13
1/4
1/52
1/2
What does the addition rule of probability calculate?
Probability of an event NOT occurring
Probability of two events occurring given that one has already happened
Probability of one event OR another event occurring
Probability of one event AND another event occurring
A random number generator produces a uniform distribution between 0 and 1. What is the probability that the generated number is greater than 0.7?
0.3
1
0.7
0.5
A fair six-sided die is rolled. What is the probability of rolling an even number?
2/3
1/6
1/3
What is the probability of getting tails when you flip a fair coin?
0
0.25
A fair coin is flipped twice. What is the expected value of the number of heads?
2
1.5
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?
(5/6)^4 * (1/6)
(1/6)^3 * (5/6)
(1/6)^4
(5/6)^3 * (1/6)
How many different ways can you arrange the letters in the word "DATA"?
24
16
4
12
A random variable X follows a uniform distribution between 0 and 10. What is the probability that X is less than 3?
0.1
0.2
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