Random Probability

Which of the following graphs represents a binomial distribution with n = 20 and p = 0.25?

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Find the probability of rolling greater than a 1 on a single die.

• 6/6

• 5/6

• 4/6

• 1/6

Find the probability of drawing a 10 from a standard deck of 52 cards.

• out of 52

• out of 52

• out of 52

• out of 52

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%

• 70%

• 100%

• 0%

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/9

• 1/9

• 1/3

What is the term used for the set of all possible outcomes in an experiment?

• Random Variable

• Variable

• Statistics

• Sample Space

• 2, 4, 5

• 0, 1, 2, 3

• 1, 2, 3, 4

• 3, 5, 6

A rental car service center company has 5 cars available for rental each day. Assume that each car is rented out for the whole day and that the number of cars rented out each day is randomly distributed with a mean of 2. Find the probability that only one car is rented out on any one day. This is _______ distribution.

• Bernoulli

• Binomial

• Poisson

• Normal

What is the the total area under the standard normal distribution curve?

• 100

• 50

• 0.5

• 1

• Yes, because all of the probabilities are between 0 and 1 inclusive and the sum of all the probabilities is 1.
• No, all probabilities are not be between 0 and 1 inclusive
• No, the sum of all the probabilities is not 1.
• Yes, because the distribution is symmetric