Random Variable and Probability Distribution

Which of the following is a discrete random variable?

• The average amount of water consumed

• The number of students enrolled in a school

• The amount of paint used in repainting a building

• The average weight of female students in your class

If two coins are tossed, which is not a possible value of the random variable for the number of heads?

• 0

• 1

• 2

• 3

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.3

Which of the following is NOT a true statement?

• The value of a random variable could be zero.

• Random variables can only have one value.

• The probability of the value of a random variable could be zero.

• The sum of all the probabilities in a probability distribution is always equal to one.

How many outcomes are there in a binomial experiment?

• 1

• 2

• 3

• Infinite

What is the sum of the probabilities of all outcomes in a probability distribution?

• 0

• 1/2

• 1

• cannot be determined

Tags

CCSS.HSS.MD.A.3

1.      If        $P\left(x\right)\ =\ \frac{x}{6}$     , what are the possible values of X for it to be a probability distribution?

• 0, 2, 3

• 1, 2, 3

• 2, 3, 4

• 1, 1, 2

Tags

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

Identify whether the experiment involves a discrete or a continuous random variable.

Rotating a spinner that has 4 equally divided parts: blue, green, yellow, and red

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Collecting data about the mileage per liter of a certain brand and model of a car

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

tossing a pair of fair coins

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Measuring the length of time it takes before a dolphin surfaces in the ocean to breath

• Discrete Random Variable

• Continuous Random Variable