A random variable X follows a uniform distribution between 0 and 10. What is the probability that X is less than 3?
0.3
0.2
0.7
0.1
A basketball player makes 80% of her free throws. What is the probability that she makes her first free throw on her third attempt?
0.8
0.008
0.032
0.16
A fair coin is flipped 5 times. What is the probability of getting exactly 3 heads?
5/16
1/2
3/16
1/8
A bag contains 5 red balls and 3 blue balls. What is the probability of drawing a red ball, then another red ball without replacement?
5/8
9/64
5/14
25/64
What is the probability of getting tails when you flip a fair coin?
1
0
0.5
0.25
If the PDF of a continuous variable is a flat line over a range, what does this imply about the distribution?
It's a Poisson distribution.
It's normally distributed.
It's exponentially distributed.
It's uniformly distributed.
What is the variance of a standard normal distribution (mean = 0, standard deviation = 1)?
2
A company produces light bulbs, and 2% are defective. What is the probability that in a sample of 10 bulbs, exactly one is defective?
0.167
0.833
0.984
0.016
You are playing a game where you roll a die until you get a 6. What is the probability that it takes you exactly 4 rolls?
(5/6)^3 * (1/6)
(1/6)^4
(5/6)^4
(1/6)^3 * (5/6)
A random variable representing the number of website visitors in an hour is an example of what type of variable?
Ordinal
Discrete
Continuous
Qualitative