Discrete Probability Distributions - FID Practice

Is this a probability distribution? Answer with a Yes or No, and give a reason for your choice.

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Which of the following is the first requirement for a probability distribution?

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Which of the following is the second requirement for a probability distribution?

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Which of the following is an example of a discrete random variable

• The number of dogs per SPCA kennel.

• The weight of dogs in a SPCA kennel

• The number of burgers sold per day at Burger King

• The number of ounces in each Frosty served at Wendy's on Tuesday

• The number of wigs sold per month at Lulu's Head's of Fashion

For the given probability distribution, find:

a. the mean

b. variance

c. standard deviation

Answer explanation

a. 7.4

b. 1.84

c. 1.356

1.    A landscape contractor bids on jobs where he can make $3000 profit. The probabilities of getting 1, 2, 3, or 4 jobs per month are shown. Find the contractor’s expected profit per month.                                                                  

Answer explanation

$7200

Tags

CCSS.HSS.MD.A.2

Given the table, find the expected value of goals scored by the baby penguins on any given night.

Answer explanation

0.17

Find the missing probability from the table.

P(76) =

Answer explanation

a. 0.34560000

b. 0.2592

0.3456

0.2304

Find the standard deviation for the following table.

Type your final answer as follows:

Standard deviation =

Answer explanation

mean = 75

variance = 18.75

SD = 4.33