PoS12

Previously on Stats 1
Week 12

Multiple Choice

Which of the following examples corresponds to a discrete random variable?

• The temperature in degrees Celsius
• The time it takes to run a mile
• The height of a person in meters
• The number of students in a class

Multiple Choice

Select the case that corresponds to a random experiment with a uniform discrete probability distribution.

• When rolling a fair six-sided die once, each outcome has an equal probability of 1/6.

• When spinning a fair spinner with 8 equal sections, the probability of landing on any one section in 3 trials is 1/8.

• When drawing 3 cards from a standard deck of 52 cards, the probability of drawing a heart is 1/4.

• When flipping a fair coin 5 times, the probability of getting heads is 1/2.

Multiple Choice

In rolling a 6-sided die 5 times, the probability of getting an even number 2 times is...

• 0.5
• 0.25
• 0.625
• 0.3125

Multiple Choice

In which of these discrete probability distribution types do we consider the occurrences over an interval?

• Normal distribution
• Binomial distribution
• Uniform distribution
• Poisson distribution

Multiple Choice

What is the probability of getting 25 patients in the next hour inside an emergency room if the same ER receives on average 15 patients every 30 minutes?

• 0.00498

• 0.0511

• 0.25

• 0.0399

• 0.5

Multiple Choice

Which type of probability distribution can we use to model the following experiment: getting 3 blue balls from picking at random 10 balls from a bag with different colors.

• Hypergeometric distribution
• Exponential distribution
• Binomial distribution
• Normal distribution