Chapter 5 Practice Test

Classify: Height of a plant measured each day for 30 days.

• Discrete

• Continuous

Tags

CCSS.HSN.Q.A.1

Classify: The numbers of cheeseburgers a fast-food restaurant serves each day

• Discrete

• Continuous

Is this a probability distribution?

• No

• Yes

Tags

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Is this a probability distribution?

• No

• Yes

Tags

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

The table represents the probability of guessing correct on a 5 question true-false quiz. Find the mean and the standard deviation.

• μ = .4; σ = 7.5

• μ = 2.5; σ = 1.1

• μ = 3; σ = 1.3

• μ = .1; σ = 0

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

A marketing survey compiled data on the number of cars in households.  If X = the number of cars in a randomly selected household, and we omit the rare cases of more than 5 cars, then X has the following probability distribution: 
X           0          1          2          3           4           5    
P(X)   0.24    0.37    0.20    0.11    0.05     0.03
What is the probability that a randomly chosen household has at least two cars?

• 0.20

• 0.29

• 0.39

• 0.61

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.B.7

CCSS.HSS.MD.A.1

The table represents the probability of guessing correct on a 5 question true-false quiz.  Find the probability for at least 4 questions correct.

• .03125

• .15625

• .3125

• .1875

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.B.9

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.3

Find the variance of a binomial distribution with n=50 and p=0.4 (Round to the nearest tenth)

• 4.2

• 3.5

• 12.0

• 6.2

The table above shows the number of cell phones per household in a small town. Find the variance. Round to the nearest hundredth.

• 0.18

• 1.70

• 0.10

• 0.14

While driving to Florida, Sophia averaged 72 m.p.h. 

• Discrete

• Continuous

Tags

CCSS.HSN.Q.A.1