Probability Distributions

Is the height, Xcm, of a seedling chosen randomly from a group of plants a discrete random variable?

• Yes

• No

Is the number of times, R, a six is rolled when a fair dice is rolled 100 times a discrete random variable?

• Yes

• No

Is the number of days, W, in a given week a discrete random variable?

• Yes

• No

A discrete random variable X has the probability distributions shown in the table. Find the value of k.

• 1/3

• 7/12

• 1/12

• 1/4

Tags

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.3

The random variable X has a probability function shown

• 0.1

• 0.01

• 10

• 1/9

The random variable X has the given probability function. Find P(X > 1).

(You will need to find k first)

• 0.125

• 0.25

• 0.525

• 0.875

The discrete random variable X has the probability function given. Find P(-2 < x < 2)

• 1

• 0.7

• 0.9

• 0.8

A discrete random variable has a probability distribution shown in the table. Find the value of a.

• 0.25

• 0.75

• 0.5

• 0.125

A discrete random variable X has the probability distribution shown in the table. Find P(1 < X ≤ 3).

• 7/8

• 1/2

• 5/8

• 3/8

A discrete random variable X has the probability distribution shown in the table. Find P(X < 2).

• 7/8

• 1/2

• 5/8

• 3/8

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.3